* {
                                               padding: 0;
                                               margin: 0;
                                               box-sizing: border-box;
                                               font-family: Arial, Helvetica, sans-serif;
                                           }

                                           html,
                                           body {
                                               height: 100%;
                                           }

                                           body {
                                               background-color: #eaf5fb;
                                               overflow-x: hidden;
                                           }

                                           /* Giriş ekranı açıkken sayfa kaymasın / scrollbar çıkmasın */
                                           body:not(.logged-in) {
                                               overflow: hidden;
                                           }

                                           /* ---------- Üst çıkış çubuğu (sadece giriş yapılınca görünür) ---------- */
                                           .top-bar {
                                               display: none;
                                               align-items: center;
                                               justify-content: flex-end;
                                               width: 100%;
                                               padding: 14px 24px;
                                               box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
                                           }

                                           .header-video-box {
                                               display: none;
                                               width: 100%;
                                               padding: 10px;
                                           }

                                           body.logged-in .header-video-box {
                                               display: block;
                                           }

                                           body.logged-in .top-bar {
                                               display: flex;
                                           }

                                           .top-bar-video {
                                               width: 100%;
                                               max-height: 650px;
                                               border:none;
                                               border-radius: 12px;
                                           }

                                           .top-logout-btn {
                                               position: relative;
                                               z-index: 2;
                                               border: none;
                                               border-radius: 10px;
                                               background-color: #4f8fbf;
                                               color: white;
                                               padding: 8px 18px;
                                               font-size: 14px;
                                               cursor: pointer;
                                           }

                                           .top-logout-btn:hover {
                                               background-color: #3d7aa8;
                                           }

                                           /* ---------- Giriş kapısı (sayfa ilk açıldığında görünen kısım) ---------- */
                                           .auth-gate {
                                               position: fixed;
                                               inset: 0;
                                               width: 100%;
                                               height: 100%;
                                               margin: 0;
                                               background: linear-gradient(135deg, #cfe9f7, #eaf5fb 60%, #dcecf9);
                                               border-radius: 0;
                                               display: flex;
                                               align-items: center;
                                               justify-content: center;
                                               padding: 20px;
                                               z-index: 1000;
                                               opacity: 1;
                                               visibility: visible;
                                               transition:
                                                   opacity 0.35s ease,
                                                   visibility 0.35s ease;
                                           }

                                           body.auth-checking .auth-gate {
                                               opacity: 0;
                                               visibility: hidden;
                                               transition: none;
                                           }

                                           body.auth-checking {
                                               background-color: #eaf5fb;
                                           }

                                           /* Giriş başarılı olunca bu sınıf eklenir ve kapı kapanır */
                                           .auth-gate.hidden {
                                               opacity: 0;
                                               visibility: hidden;
                                               pointer-events: none;
                                           }

                                           .auth-gate-box {
                                               width: 100%;
                                               max-width: 380px;
                                               padding: 36px 30px;
                                               border-radius: 18px;
                                               background-image: url(ımg/proj.jpg);
                                               background-size: cover;
                                               background-position: center;
                                               background-color: rgba(255, 255, 255, 0.55);
                                               background-blend-mode: overlay;
                                               box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
                                               text-align: center;
                                           }

                                           .auth-gate-box h2 {
                                               font-size: 20px;
                                               color: #234;
                                               margin-bottom: 18px;
                                           }

                                           .auth-form {
                                               display: flex;
                                               flex-direction: column;
                                               gap: 10px;
                                           }

                                           .auth-form input {
                                               padding: 10px 12px;
                                               border-radius: 10px;
                                               border: 1px solid transparent;
                                               background-color: rgba(255, 255, 255, 0.9);
                                               font-size: 14px;
                                           }

                                           .auth-form input:focus {
                                               outline: none;
                                               border-color: #6badd6;
                                           }

                                           .auth-form button,
                                           .auth-status button {
                                               border: none;
                                               border-radius: 10px;
                                               background-color: #4f8fbf;
                                               color: white;
                                               padding: 10px 14px;
                                               font-size: 14px;
                                               cursor: pointer;
                                           }

                                           .auth-form button:hover,
                                           .auth-status button:hover {
                                               background-color: #3d7aa8;
                                           }

                                           .auth-form button:disabled {
                                               opacity: 0.6;
                                               cursor: not-allowed;
                                           }

                                           .auth-error {
                                               color: #a33;
                                               font-size: 13px;
                                               min-height: 16px;
                                           }

                                           .auth-status {
                                               display: none;
                                               flex-direction: column;
                                               gap: 10px;
                                               align-items: center;
                                               font-size: 14px;
                                               color: #234;
                                           }

                                           /* ---------- Ana içerik (form kutucukları) ---------- */
                                           main {
                                               display: none;
                                           }

                                           body.logged-in main {
                                               display: block;
                                           }

                                           .image {
                                               background-color: #befc9c;
                                               background: linear-gradient(to bottom, transparent 60%, #befc9c 100%),
                                                   url(../ımg/proj.jpg) center 50px / contain no-repeat;
                                               min-height: 100vh;
                                               padding: 60px 30px;
                                           }

                                           .layout-wrapper {
                                               display: flex;
                                               align-items: flex-start;
                                               gap: 70px;
                                               max-width: 1500px;
                                               margin: 0 auto;
                                           }

                                           .conter {
                                               display: grid;
                                               grid-template-columns: repeat(3, 1fr);
                                               gap: 28px;
                                               align-items: start;
                                           }

                                           .music-toggle-btn {
                                               display: none;
                                           }


                                           .log {
                                               background-color: rgba(247, 247, 154, 0.55);
                                               backdrop-filter: blur(2px);
                                               border-radius: 14px;
                                               padding: 16px;
                                               display: flex;
                                               flex-direction: column;
                                               min-height: 150px;
                                               box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
                                           }

                                           .log h3 {
                                               font-size: 16px;
                                               color: #333;
                                               margin-bottom: 10px;
                                           }

                                           .log-content {
                                               background-color: rgba(60, 50, 20, 0.12);
                                               border-radius: 10px;
                                               padding: 15px;
                                               flex: 1;
                                               display: flex;
                                               flex-direction: column;
                                               position: relative;
                                           }

                                           .widget-header {
                                               position: relative;
                                               display: flex;
                                               justify-content: flex-end;
                                               margin-bottom: 6px;
                                           }

                                           .menu-btn {
                                               display: none;
                                               border: none;
                                               background: rgba(0, 0, 0, 0.08);
                                               color: #333;
                                               width: 26px;
                                               height: 22px;
                                               border-radius: 6px;
                                               cursor: pointer;
                                               font-size: 14px;
                                               line-height: 1;
                                           }

                                           .side-menu {
                                               width: 180px;
                                               flex-shrink: 0;
                                               display: flex;
                                               flex-direction: column;
                                               justify-content: flex-start;
                                               gap: 10px;
                                               background-color: rgba(220, 236, 249, 0.6);
                                               border-radius: 16px;
                                               padding: 12px 12px;
                                               position: sticky;
                                               align-items: stretch;
                                               top: 20px;
                                           }

                                           /* Her bir mini player kutusu */
                                           .side-player-box {
                                               width: 100%;
                                               display: flex;
                                               flex-direction: column;
                                               align-items: center;
                                               gap: 4px;
                                               padding-bottom: 10px;
                                               border-bottom: 1px solid rgba(0, 0, 0, 0.08);
                                           }

                                           .side-player-box:last-child {
                                               border-bottom: none;
                                               padding-bottom: 0;
                                           }

                                           /* Thumbnail görsel */
                                           .side-thumb {
                                               width: 100%;
                                               aspect-ratio: 1 / 1;
                                               border-radius: 10px;
                                               overflow: hidden;
                                           }

                                           .side-thumb img {
                                               width: 100%;
                                               height: 100%;
                                               object-fit: cover;
                                               display: block;
                                           }

                                           /* Vinyl + buton satırı */
                                           .side-player-controls {
                                               display: flex;
                                               align-items: center;
                                               justify-content: center;
                                               gap: 8px;
                                           }

                                           .side-menu .vinyl {
                                               width: 40px;
                                               height: 40px;
                                               border-radius: 50%;
                                               background: radial-gradient(circle at center,
                                                       #333 0 6px,
                                                       #111 6px 100%);
                                           }

                                           .vinyl.spinning {
                                               animation: spin 2s linear infinite;
                                           }

                                           .side-menu .toggle-btn {
                                               width: 30px;
                                               height: 30px;
                                               font-size: 14px;
                                               border: none;
                                               border-radius: 6px;
                                               cursor: pointer;
                                               user-select: none;
                                               background-color: rgba(255, 255, 255, 0.8);
                                           }

                                           .side-menu .toggle-btn:hover {
                                               background-color: rgba(255, 255, 255, 1);
                                           }

                                           /* Çalan kutuyu görsel olarak vurgulamak istersen */
                                           .side-player-box.playing .side-thumb {
                                               outline: 2px solid #d9b64e;
                                               outline-offset: 2px;
                                           }

                                           body.logged-in .menu-btn {
                                               display: inline-flex;
                                               align-items: center;
                                               justify-content: center;
                                           }

                                           .menu-btn:hover {
                                               background: rgba(0, 0, 0, 0.15);
                                           }

                                           .menu-dropdown {
                                               position: absolute;
                                               top: 26px;
                                               right: 0;
                                               background: #fffdf2;
                                               border-radius: 8px;
                                               box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
                                               overflow: hidden;
                                               z-index: 5;
                                               display: none;
                                               flex-direction: column;
                                               min-width: 90px;
                                           }

                                           .menu-dropdown.open {
                                               display: flex;
                                           }

                                           .menu-option {
                                               border: none;
                                               background: none;
                                               text-align: left;
                                               padding: 8px 12px;
                                               font-size: 13px;
                                               cursor: pointer;
                                               color: #333;
                                           }

                                           .menu-option:hover {
                                               background: rgba(0, 0, 0, 0.06);
                                           }

                                           .pending-area {
                                               display: none;
                                               flex-direction: column;
                                               gap: 6px;
                                               margin-bottom: 8px;
                                           }

                                           .pending-area.open {
                                               display: flex;
                                           }

                                           .pending-row {
                                               display: flex;
                                               gap: 6px;
                                           }

                                           .pending-row input[type="text"] {
                                               flex: 1;
                                               min-width: 0;
                                               padding: 8px 10px;
                                               border-radius: 8px;
                                               border: 1px solid transparent;
                                               background-color: rgba(255, 253, 208, 0.9);
                                               font-size: 14px;
                                           }

                                           .pending-row input[type="text"]:focus {
                                               outline: none;
                                               border-color: orange;
                                               box-shadow: 0 0 5px rgba(138, 102, 161, 0.5);
                                           }

                                           .save-btn {
                                               flex-shrink: 0;
                                               border: none;
                                               border-radius: 8px;
                                               background-color: #d97757;
                                               color: white;
                                               padding: 0 12px;
                                               font-size: 13px;
                                               cursor: pointer;
                                           }

                                           .save-btn:hover {
                                               background-color: #c4623f;
                                           }

                                           .item-list {
                                               display: flex;
                                               flex-direction: column;
                                               gap: 6px;
                                           }

                                           .item-row {
                                               display: flex;
                                               gap: 6px;
                                               align-items: center;
                                           }

                                           .item-box {
                                               flex: 1;
                                               min-width: 0;
                                               background-color: rgba(255, 253, 208, 0.7);
                                               border-radius: 8px;
                                               padding: 8px 10px;
                                               font-size: 14px;
                                               color: #333;
                                           }

                                           .item-delete-btn {
                                               display: none;
                                               flex-shrink: 0;
                                               border: none;
                                               background: none;
                                               color: #a33;
                                               cursor: pointer;
                                               font-size: 14px;
                                           }

                                           .item-list.delete-mode .item-delete-btn {
                                               display: inline-block;
                                           }

                                           .item-delete-btn:hover {
                                               color: #700;
                                           }

                                           .split-columns {
                                               display: flex;
                                               gap: 15px;
                                           }

                                           .split-columns .item-list {
                                               flex: 1;
                                               min-width: 0;
                                               display: flex;
                                               flex-direction: column;
                                           }

                                           @keyframes spin {
                                               from {
                                                   transform: rotate(0deg);
                                               }

                                               to {
                                                   transform: rotate(360deg);
                                               }
                                           }

                                           .status {
                                               text-align: center;
                                               color: #900;
                                               margin-top: 10px;
                                               font-size: 13px;
                                               min-height: 16px;
                                           }

                                           /* Dosya olarak kaydet + kayıtlı planlar */
                                           .save-file-box {
                                               display: none;
                                               max-width: 800px;
                                               margin: 40px auto 0;
                                               background-color: #f7c6e7df;
                                               border-radius: 16px;
                                               padding: 16px 20px;
                                               box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
                                           }

                                           body.logged-in .save-file-box {
                                               display: block;
                                           }

                                           body.logged-in .saved-plans-box {
                                               display: block;
                                           }

                                           .save-file-box h3 {
                                               font-size: 15px;
                                               color: #333;
                                               margin-bottom: 10px;
                                           }

                                           .save-file-row {
                                               display: flex;
                                               flex-wrap: wrap;
                                               gap: 8px;
                                           }

                                           .save-file-row input {
                                               flex: 1;
                                               min-width: 140px;
                                               padding: 9px 10px;
                                               border-radius: 8px;
                                               border: 1px solid transparent;
                                               background-color: rgba(255, 255, 255, 0.85);
                                               font-size: 13px;
                                           }

                                           .save-file-row input:focus {
                                               outline: none;
                                               border-color: orange;
                                           }

                                           .save-file-row button {
                                               border: none;
                                               border-radius: 8px;
                                               background-color: #d97757;
                                               color: white;
                                               padding: 0 16px;
                                               font-size: 13px;
                                               cursor: pointer;
                                           }

                                           .save-file-row button:hover {
                                               background-color: #c4623f;
                                           }

                                           .saved-plan-item {
                                               background-color: rgba(255, 255, 255, 0.6);
                                               border-radius: 8px;
                                               padding: 8px 12px;
                                           }

                                           .saved-plan-header {
                                               display: flex;
                                               justify-content: space-between;
                                               align-items: center;
                                               cursor: pointer;
                                               font-size: 14px;
                                               color: #333;
                                           }

                                           .saved-plan-date {
                                               font-size: 12px;
                                               color: #666;
                                           }

                                           .saved-plan-content {
                                               display: none;
                                               margin-top: 8px;
                                               font-size: 13px;
                                               color: #333;
                                               border-top: 1px solid rgba(0, 0, 0, 0.1);
                                               padding-top: 8px;
                                           }

                                           .saved-plan-content.open {
                                               display: block;
                                           }

                                           .saved-plan-content p {
                                               margin-bottom: 4px;
                                           }

                                           .video-box {
                                               display: none;
                                               max-width: 800px;
                                               margin: 20px auto 0;
                                               text-align: center;
                                           }

                                           body.logged-in .video-box {
                                               display: block;
                                           }

                                           .video-box video {
                                               width: 80%;
                                               border-radius: 14px;
                                               box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
                                           }

                                           audio {
                                               display: none;
                                           }


                                           @media screen and (max-width: 900px) {
                                               .conter {
                                                   grid-template-columns: repeat(2, 1fr);
                                               }
                                           }

                                           @media screen and (max-width: 600px) {
                                               .conter {
                                                   grid-template-columns: 1fr;
                                                   padding: 0;
                                                   margin-top: 24px;
                                               }

                                               .auth-gate {
                                                   padding: 12px;
                                               }

                                               .auth-gate-box {
                                                   padding: 26px 20px;
                                               }

                                               .pending-row {
                                                   flex-wrap: wrap;
                                               }

                                               .image {
                                                   padding: 0;
                                                   min-height: auto;
                                                   position: relative;
                                                   background: none;
                                                   background-color: #eaf5fb;
                                               }

                                               .image::before {
                                                   content: "";
                                                   position: absolute;
                                                   top: 0;
                                                   left: 0;
                                                   width: 100%;
                                                   height: 220px;
                                                   background-image: url(ımg/proj.jpg);
                                                   background-size: cover;
                                                   background-position: center 20%;
                                                   background-repeat: no-repeat;
                                                   z-index: 0;
                                               }

                                               .top-bar {
                                                   padding: 10px 14px;
                                               }

                                               .header-video-box {
                                                   padding: 8px 12px;
                                               }

                                               .top-bar-video {
                                                   max-height: 160px;
                                               }

                                               .save-file-box,
                                               .saved-plans-box {
                                                   margin: 16px 12px 0;
                                                   padding: 14px;
                                               }

                                               .save-file-row {
                                                   flex-direction: column;
                                               }

                                               .save-file-row input,
                                               .save-file-row button {
                                                   min-width: 0;
                                                   width: 100%;
                                               }

                                               .saved-plan-header {
                                                   flex-wrap: wrap;
                                                   gap: 4px;
                                               }

                                               /* Wrapper: sütun düzeni, banner için üstten boşluk */
                                               .layout-wrapper {
                                                   display: block;
                                                   width: 100%;
                                                   max-width: 100%;
                                                   padding: 0 16px;
                                                   padding-top: 220px;
                                                   position: relative;
                                               }

                                               /* Müzikler butonu: banner'ın içinde, ortalanmış */
                                               .music-toggle-btn {
                                                   display: block;
                                                   position: absolute;
                                                   top: 90px;
                                                   left: 50%;
                                                   transform: translateX(-50%);
                                                   width: 55%;
                                                   max-width: calc(100% - 32px);
                                                   padding: 8px 14px;
                                                   border: none;
                                                   border-radius: 10px;
                                                   background-color: #4f8fbf;
                                                   color: white;
                                                   opacity: 0.9;
                                                   font-size: 14px;
                                                   cursor: pointer;
                                                   z-index: 30;
                                               }

                                               /* Sidebar: sticky kapalı, kapalı halde tamamen gizli */
                                               .side-menu {
                                                   width: 100%;
                                                   position: static;
                                                   max-height: 0;
                                                   overflow: hidden;
                                                   padding: 0;
                                                   margin: 0;
                                                   background-color: rgba(220, 236, 249, 0.95);
                                                   transition: max-height 0.3s ease, padding 0.3s ease;
                                                   max-width: 100%;
                                               }

                                               .side-menu.menu-open {
                                                   max-height: 2000px;
                                                   padding: 12px;
                                               }

                                               .side-player-box {
                                                   flex-direction: row;
                                                   align-items: center;
                                                   gap: 12px;
                                               }

                                               .side-thumb {
                                                   width: 100px;
                                                   flex-shrink: 0;
                                               }

                                               .side-player-controls {
                                                   flex: 1;
                                                   justify-content: flex-start;
                                               }

                                               .log {
                                                   background-color: rgb(188, 203, 144);
                                                   backdrop-filter: none;
                                               }

                                               .split-columns .item-list[data-side="left"] .item-box {
                                                   background-color: #ffcccb;
                                               }

                                               .split-columns .item-list[data-side="right"] .item-box {
                                                   background-color: #c8dcff;
                                               }

                                           }