* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    -webkit-user-select: none;
    user-select: none;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: #000;
    overflow: hidden;
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    max-height: 100vh;
}

.container {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.video-container {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-item {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    touch-action: none;
    z-index: 1;
}

.video-item.active {
    opacity: 1;
    z-index: 2;
}

.video-item.prev {
    opacity: 0;
    z-index: 1;
}

.video-item.next {
    opacity: 0;
    z-index: 1;
}

video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    max-width: 100%;
    max-height: 100%;
    -webkit-user-select: none;
    user-select: none;
    -webkit-media-controls-panel: auto;
}

/* iOS Safari specific */
video::-webkit-media-controls {
    display: none;
}

/* Mobile view - portrait */
@media (max-aspect-ratio: 1/1) {
    video {
        width: 100%;
        height: auto;
        object-fit: cover;
    }
}

/* Desktop view - landscape */
@media (min-aspect-ratio: 1/1) {
    video {
        width: auto;
        height: 100%;
        object-fit: cover;
    }
}

.video-info {
    position: absolute;
    top: 20px;
    right: 20px;
    color: white;
    z-index: 10;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: env(safe-area-inset-top);
    padding-right: max(20px, env(safe-area-inset-right));
}

.video-title {
    font-size: clamp(14px, 4vw, 24px);
    font-weight: 600;
    margin-bottom: 8px;
    display: none;
}

.download-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 20px;
    pointer-events: all;
    transition: all 0.2s;
    flex-shrink: 0;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.download-btn:active {
    transform: scale(0.95);
}

.video-controls {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 10;
}

.control-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

.control-btn:active {
    transform: scale(0.95);
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 18px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 20;
}

.loading.show {
    opacity: 1;
}

.loading-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff006e, #00f5ff);
    width: 0%;
    transition: width 0.1s linear;
}

.gesture-indicator {
    position: absolute;
    top: 20px;
    left: 20px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}

.gesture-indicator.show {
    opacity: 1;
}

/* Swipe animation */
.video-item.swipe-up {
    animation: slideUp 0.3s ease-out forwards;
}

.video-item.swipe-down {
    animation: slideDown 0.3s ease-out forwards;
}

@keyframes slideUp {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(-100%);
    }
}

@keyframes slideDown {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(100%);
    }
}

/* Loading spinner */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 3px solid #fff;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== LOGIN SCREEN ===== */
.login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.login-screen.active {
    opacity: 1;
    pointer-events: all;
}

.login-container {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.login-container h1 {
    font-size: 48px;
    color: #fff;
    margin-bottom: 10px;
    font-weight: 700;
}

.login-container p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 30px;
    font-size: 16px;
}

#loginForm {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#pinInput {
    padding: 15px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 24px;
    text-align: center;
    letter-spacing: 10px;
    transition: all 0.3s;
}

#pinInput:focus {
    outline: none;
    border-color: #00f5ff;
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.2);
}

#loginForm button {
    padding: 15px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #ff006e, #00f5ff);
    color: white;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

#loginForm button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 0, 110, 0.3);
}

#loginForm button:active {
    transform: translateY(0);
}

.error-message {
    display: none;
    color: #ff4444;
    font-size: 14px;
    padding: 10px;
    background: rgba(255, 68, 68, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(255, 68, 68, 0.3);
    margin-top: 10px;
}

/* ===== MAIN APP ===== */
.main-app {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    overflow: hidden;
}

.main-app.active {
    opacity: 1;
    pointer-events: all;
}

.app-header {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    padding: 15px 20px;
    padding-top: max(15px, env(safe-area-inset-top));
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 50;
    position: sticky;
    top: 0;
    transition: transform 0.3s ease;
}

.app-header.hidden {
    transform: translateY(-100%);
    position: fixed;
}

.app-header h2 {
    color: white;
    font-size: 20px;
    font-weight: 600;
}

.header-buttons {
    display: flex;
    gap: 10px;
}

.btn-small {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-small:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn-small:active {
    transform: scale(0.95);
}

.video-viewer-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: rgba(20, 20, 30, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 {
    color: white;
    font-size: 24px;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 32px;
    cursor: pointer;
    transition: transform 0.2s;
    line-height: 1;
}

.close-btn:hover {
    transform: scale(1.2);
}

#uploadForm {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#uploadForm input[type="file"],
#uploadForm input[type="password"] {
    padding: 12px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: white;
    font-size: 16px;
    transition: all 0.3s;
}

#uploadForm input[type="file"]::file-selector-button {
    background: linear-gradient(135deg, #ff006e, #00f5ff);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

#uploadForm input[type="file"]::file-selector-button:hover {
    transform: translateY(-2px);
}

#uploadForm input:focus {
    outline: none;
    border-color: #00f5ff;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 245, 255, 0.2);
}

#uploadForm button {
    padding: 12px;
    background: linear-gradient(135deg, #ff006e, #00f5ff);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

#uploadForm button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 0, 110, 0.3);
}

#uploadForm button:active {
    transform: translateY(0);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ff006e, #00f5ff);
    width: 0%;
    transition: width 0.2s;
}

.file-drop-zone {
    border: 2px dashed rgba(0, 245, 255, 0.5);
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: rgba(0, 245, 255, 0.05);
}

.file-drop-zone:hover {
    border-color: rgba(0, 245, 255, 0.8);
    background: rgba(0, 245, 255, 0.1);
}

.file-drop-zone.drag-over {
    border-color: #00f5ff;
    background: rgba(0, 245, 255, 0.2);
    transform: scale(1.02);
}

.file-drop-zone p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin: 0;
}

.drop-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    pointer-events: none;
}

.drop-overlay.active {
    display: flex;
    pointer-events: auto;
}

.drop-indicator {
    color: white;
    font-size: 32px;
    font-weight: bold;
    text-shadow: 0 0 20px rgba(0, 245, 255, 0.5);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

#progressList {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.progress-item {
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    border-left: 3px solid #00f5ff;
}

.progress-item-name {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.progress-item-bar {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.progress-item-fill {
    height: 100%;
    background: linear-gradient(90deg, #ff006e, #00f5ff);
    width: 0%;
    transition: width 0.2s ease;
}

.progress-item.success {
    border-left-color: #00ff00;
}

.progress-item.error {
    border-left-color: #ff0000;
}

#loginError,
#uploadError {
    color: #ff6b6b;
    font-size: 14px;
    padding: 10px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 6px;
    border: 1px solid rgba(255, 107, 107, 0.3);
    margin-top: 10px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
    .app-header {
        padding: 12px 15px;
    }

    .app-header h2 {
        font-size: 18px;
    }

    .btn-small {
        padding: 6px 12px;
        font-size: 12px;
    }

    .login-container {
        padding: 30px 20px;
    }

    .login-container h1 {
        font-size: 36px;
    }

    .modal-content {
        padding: 20px;
    }

    .modal-header h3 {
        font-size: 20px;
    }
}