/* ROOT AND RESET */
:root {
    --bg-primary: #020617;
    --bg-secondary: #0f172a;
    --accent: #10b981;
    --accent-hover: #059669;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(15, 23, 42, 0.35); /* Increased Transparency */
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    --clip-media: #3b82f6;
    --clip-text: #f59e0b;
    --clip-audio: #a855f7;
    --sidebar-width: 340px;
    --timeline-height: 280px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', 'Inter', sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    overflow: hidden; /* App feels native */
    height: 100vh;
}

.app-background {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1;
    background: radial-gradient(circle at 0% 0%, rgba(59, 130, 246, 0.15), transparent 50%),
                radial-gradient(circle at 100% 100%, rgba(16, 185, 129, 0.1), transparent 50%);
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 0;
    overflow: hidden;
}

/* Glassmorphism Panel Utility */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.w-100 { width: 100%; }
.flex-row { display: flex; gap: 0.5rem; align-items: center; }
.flex-spaced { display: flex; justify-content: space-between; gap: 0.5rem; align-items: center; }

h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; display: flex; align-items: center; gap: 0.5rem; color: var(--text-muted); margin-bottom: 1rem; border-bottom: 1px solid var(--glass-border); padding-bottom: 0.5rem;}

/* New Property Panel Header */
.prop-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 0.5rem;
}

.prop-header h3 {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
}

.close-props-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    transition: 0.2s;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close-props-btn:hover {
    color: #ef4444; 
    background: rgba(239, 68, 68, 0.1);
    transform: scale(1.1);
}

/* Buttons & Inputs */
.btn {
    border: none;
    padding: 0.6rem 1rem;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    white-space: nowrap;
}
.btn-primary { background: rgba(255,255,255,0.05); color: var(--text-main); border: 1px solid var(--glass-border); }
.btn-primary:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.2); }
.btn-secondary { background: transparent; border: 1px solid var(--glass-border); color: var(--text-muted); }
.btn-secondary:hover { color: var(--text-main); border-color: var(--text-main); background: rgba(255,255,255,0.05); }
.btn-accent { background: var(--accent); color: #000; font-size: 0.9rem; padding: 0.75rem; width: 100%; }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3); }
.btn-accent:active { transform: translateY(0); }

.icon-btn { background: transparent; border: none; color: var(--text-muted); cursor: pointer; font-size: 1.1rem; transition: 0.2s; padding: 0.4rem; display: flex; align-items: center; justify-content: center; }
.icon-btn:hover { color: var(--accent); scale: 1.1; }
.icon-insert-btn { width: 36px; height: 36px; border-radius: 8px; font-size: 0.9rem; }

textarea, .input-field {
    width: 100%;
    background: rgba(0,0,0,0.05); /* Ultra Transparent */
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 0.75rem;
    border-radius: 10px;
    outline: none;
    font-size: 0.85rem;
    resize: none;
    transition: 0.2s;
}
textarea:focus, .input-field:focus { border-color: var(--accent); background: rgba(255,255,255,0.05); }

.styled-select { appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; background-size: 1rem; padding-right: 2.5rem; }

.file-upload-btn { cursor: pointer; text-align: center; font-size: 0.75rem; border-style: dashed; border-width: 2px; }

input[type="color"] {
    appearance: none; border: none; width: 40px; height: 40px; border-radius: 8px; cursor: pointer; background: none;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch { border: 2px solid var(--glass-border); border-radius: 8px; }

input[type="range"] { flex: 1; accent-color: var(--accent); height: 4px; border-radius: 2px; cursor: pointer; }

.control-group { margin-bottom: 1.25rem; display: flex; flex-direction: column; gap: 0.4rem; }
.control-group label { font-size: 0.75rem; font-weight: 600; color: var(--text-muted); opacity: 0.8; }

.toggle-group { display: flex; background: rgba(0,0,0,0.2); border-radius: 10px; overflow: hidden; border: 1px solid var(--glass-border); }
.style-btn { flex: 1; background: transparent; border: none; color: var(--text-muted); cursor: pointer; padding: 0.6rem; transition: 0.2s; }
.style-btn:hover { color: var(--text-main); background: rgba(255,255,255,0.05); }
.style-btn.active { background: var(--text-main); color: #000; }

/* APP HEADER & SETTINGS */
.app-header {
    height: 64px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    z-index: 1000;
}

.header-left { display: flex; align-items: center; gap: 1.5rem; }
.sidebar-toggle { background: transparent; border: none; color: var(--text-main); font-size: 1.25rem; cursor: pointer; display: none; }
.logo { font-size: 1.1rem; font-weight: 800; letter-spacing: -0.01em; }
.logo span { color: var(--accent); }

.header-settings {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(255,255,255,0.03);
    padding: 0.4rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
}

.header-settings::-webkit-scrollbar { display: none; }
.header-settings { scrollbar-width: none; }

.setting-item { display: flex; align-items: center; gap: 0.6rem; color: var(--text-muted); font-size: 0.85rem; flex-shrink: 0; }
.header-select {
    background: transparent;
    border: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
}
.header-select option { background: var(--bg-secondary); color: var(--text-main); }

.header-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    transition: 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.header-btn:hover { color: var(--accent); scale: 1.1; }
.header-btn.secondary { 
    background: rgba(255,255,255,0.05); 
    padding: 0.5rem 0.8rem; 
    border-radius: 8px; 
    font-size: 0.75rem; 
    font-weight: 800; 
    gap: 0.4rem;
    color: var(--text-main);
}

.header-actions { 
    display: flex; 
    align-items: center; 
    gap: 1rem; 
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.header-actions::-webkit-scrollbar { display: none; }
.header-actions { scrollbar-width: none; }

/* TOP WORKSPACE: Sidebar + Preview */
.top-workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.sidebar {
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--glass-border);
    z-index: 100;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-header { padding: 1.25rem 1.5rem; }
.sidebar-header h2 { font-size: 1.1rem; font-weight: 800; display: flex; align-items: center; gap: 0.6rem; letter-spacing: -0.02em;}
.sidebar-header p { font-size: 0.7rem; color: var(--accent); margin-top: 0.2rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em;}

.controls-wrapper { padding: 0 1.5rem 1.5rem 1.5rem; flex: 1; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--glass-border) transparent; }
.sidebar-footer { padding: 1.25rem 1.5rem; border-top: 1px solid var(--glass-border); background: rgba(0,0,0,0.1);}
.prop-section { display: none; height: 100%; }
.prop-section.active { display: flex; flex-direction: column; animation: slideUp 0.3s ease-out; }
#prop-text.active { height: 100%; }
.text-editor-container { flex: 1; display: flex; flex-direction: column; min-height: 200px; }
.text-editor-container textarea { flex: 1; min-height: 100px; }

@keyframes slideUp { from{opacity:0; transform: translateY(10px);} to{opacity:1; transform: translateY(0);} }

.preview-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    background: #000;
}

.preview-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.75rem 1.25rem; background: rgba(0,0,0,0.4); border-bottom: 1px solid var(--glass-border);
    z-index: 10;
}
.status-indicator { display: flex; align-items: center; gap: 0.6rem; font-weight: 600; font-size: 0.8rem; color: var(--text-muted); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #64748b; }
.dot.active { background: var(--accent); box-shadow: 0 0 10px var(--accent); }

.video-wrapper {
    flex: 1; display: flex; justify-content: center; align-items: center;
    padding: 1.5rem; overflow: hidden;
}

.video-frame {
    background-color: #000;
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.9);
    position: relative;
    overflow: hidden;
    height: 100%;
    /* aspect-ratio set dynamically */
}

.frame-layer { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none;}
#frame-bg { z-index: 1; }
#frame-objects { z-index: 2; }

/* Dynamic Object rendering in frame */
.frame-obj-text {
    position: absolute;
    transform: translate(-50%, -50%); /* Centered anchor */
    white-space: pre-wrap;
    text-align: center;
    pointer-events: auto;
    cursor: move;
    border: 2px dashed transparent;
    user-select: none;
    z-index: 10;
}
.frame-obj-text.selected { border: 2px dashed var(--accent); }
.frame-obj-resizer {
    width: 14px; height: 14px; background: var(--accent); border: 2px solid #fff; border-radius: 50%;
    position: absolute; bottom: -7px; right: -7px; cursor: nwse-resize; display: none;
}
.frame-obj-text.selected .frame-obj-resizer { display: block; }

/* BOTTOM TIMELINE */
.bottom-timeline {
    height: var(--timeline-height);
    display: flex; flex-direction: column;
    border-top: 1px solid var(--glass-border);
    background: #0f172a;
}

.timeline-header {
    height: 50px;
    border-bottom: 1px solid var(--glass-border); background: rgba(0,0,0,0.4);
    display: flex; align-items: center; padding: 0 1rem; justify-content: space-between;
}
.tl-tools { display: flex; align-items: center; gap: 0.75rem; }
.tl-tools.center {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
    max-width: 300px;
}
.tl-tools.center::-webkit-scrollbar { display: none; }
.tl-tools.center { scrollbar-width: none; }
.tl-time-counter { font-family: 'Roboto Mono', monospace; font-size: 0.85rem; font-weight: 700; color: var(--accent); background: rgba(16, 185, 129, 0.1); padding: 0.2rem 0.5rem; border-radius: 4px; }
.tl-add-btn { padding: 0.5rem 0.75rem; font-size: 0.75rem; border-radius: 8px; }

.timeline-body {
    display: flex; flex: 1; overflow: hidden; position: relative;
}

.track-labels {
    width: 110px; border-right: 1px solid var(--glass-border);
    background: rgba(0,0,0,0.3); padding-top: 30px; display: flex; flex-direction: column;
    z-index: 50; flex-shrink: 0;
}
.t-label {
    height: 60px; display: flex; align-items: center; padding-left: 0.75rem;
    font-size: 0.65rem; font-weight: 700; text-transform: uppercase; color: var(--text-muted); border-bottom: 1px solid rgba(255,255,255,0.05);
}

.tracks-viewport {
    flex: 1; position: relative; overflow-x: auto; overflow-y: hidden;
    scrollbar-width: thin;
}

.ruler-container {
    height: 30px; border-bottom: 1px solid var(--glass-border); background: rgba(0,0,0,0.5);
    position: relative;
}
.playhead {
    position: absolute; top: 0; bottom: -1000px; width: 2px; background: #ef4444; z-index: 100;
    pointer-events: none;
}
.playhead-handle {
    position: absolute; top: 0; left: -8px; width: 16px; height: 16px;
    background: #ef4444; border-radius: 50%; cursor: ew-resize; z-index: 101; pointer-events: auto;
}

.tracks-container { position: relative; height: 100%; }

.tl-track {
    height: 60px; border-bottom: 1px solid rgba(255,255,255,0.03); position: relative; width: 100%;
}
.track-grid {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0; pointer-events: none;
}

/* Timeline Clip Node */
.clip-node {
    position: absolute; height: 44px; top: 8px; border-radius: 8px;
    display: flex; align-items: center; padding: 0 0.75rem;
    font-size: 0.7rem; font-weight: 700; color: #fff;
    cursor: grab; user-select: none; overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2); border: 2px solid transparent;
    transition: border-color 0.2s, transform 0.1s;
}
.clip-node.selected { border-color: #fff; z-index: 5; transform: scale(1.02);}
.clip-node:active { cursor: grabbing; }

.clip-node[data-track="media"] { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.clip-node[data-track="text"] { background: linear-gradient(135deg, #f59e0b, #d97706); }
.clip-node[data-track="audio"] { background: linear-gradient(135deg, #a855f7, #7c3aed); }

.clip-handle {
    position: absolute; top: 0; bottom: 0; width: 10px; background: rgba(255,255,255,0.2); cursor: ew-resize; z-index: 2;
}
.clip-handle:hover { background: rgba(255,255,255,0.4); }
.clip-handle.left { left: 0; }
.clip-handle.right { right: 0; }
.clip-innerText { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; pointer-events: none; margin-left: 0.4rem;}

/* Overlay */
.overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(2, 6, 23, 0.95); z-index: 9999;
    display: flex; justify-content: center; align-items: center;
    backdrop-filter: blur(20px);
}
.overlay.hidden { display: none; }
.loader-content { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 1.5rem; width: 90%; max-width: 400px; padding: 2rem;}
.spinner { width: 50px; height: 50px; border: 4px solid rgba(16, 185, 129, 0.1); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite; }
@keyframes spin { 100% { transform: rotate(360deg); } }
.progress-bar { width: 100%; height: 6px; background: rgba(255,255,255,0.05); border-radius: 3px; overflow: hidden; }
.progress-fill { width: 0%; height: 100%; background: var(--accent); transition: width 0.1s linear; }

/* Mobile Adaptations */
@media (max-width: 900px) {
    .top-workspace { flex-direction: column; }
    .sidebar { 
        position: fixed; top: 0; left: 0; width: 100%; height: 100%; 
        background: var(--bg-primary); transform: translateX(-100%); z-index: 1001; 
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-toggle { display: flex; z-index: 1100; }
    
    .header-settings { gap: 0.75rem; padding: 0.3rem 0.6rem; }
    .setting-item span { display: none; }
    
    .preview-area { height: 60%; order: 1; }
    .video-wrapper { padding: 1rem; }
    .video-frame { transform: scale(0.9); }
    .track-labels { width: 80px; }
}

@media (max-width: 600px) {
    .app-header { padding: 0 0.75rem; gap: 0.5rem; }
    .logo { font-size: 0.9rem; }
    .header-settings { gap: 0.5rem; }
    .setting-item { font-size: 0.75rem; }
    .header-select { font-size: 0.75rem; }
    .header-btn.secondary span { display: none; }
    .btn-accent span { display: none; }
    
    .video-frame { transform: scale(0.65); }
    .bottom-timeline { height: 260px; order: 3; }
    .tl-add-btn span { display: none; }
    .tl-tools.right { display: none; }
}

.sidebar-toggle-btn { color: var(--text-main); font-size: 1.2rem; cursor: pointer; }