/* ===================================== */
/* == GLOBAL STYLES & CSS VARIABLES == */
/* ===================================== */
:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --accent-color: #4cc9f0;
    --danger-color: #ef4444;
    --danger-hover-color: #dc2626;
    --success-color: #22c55e;
    --warning-color: #f59e0b;

    --dark-bg: #0b0c10;
    --dark-card-bg: #1f2833;
    --dark-text: #c5c6c7;
    
    --light-bg: #f5f7fa;
    --light-card-bg: #ffffff;
    --light-text: #333333;
    
    --border-radius: 12px;
    --box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
    --dark-box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light-bg);
    color: var(--light-text);
    line-height: 1.6;
    transition: var(--transition);
}

body.dark-mode {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

.dark-mode a {
    color: var(--accent-color);
}

.dark-mode a:hover {
    color: #8ae3ff;
}

.container {
    width: 100%;
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ===================================== */
/* == HEADER & NAVIGATION == */
/* ===================================== */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo a {
    color: #ffffff;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav ul li a {
    color: #ffffff;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 50px;
    transition: var(--transition);
}

nav ul li a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle {
    background: none;
    border: none;
    color: #ffffff;
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: rotate(30deg);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #ffffff;
    font-size: 24px;
    cursor: pointer;
}

/* ===================================== */
/* == MOBILE MENU == */
/* ===================================== */
.mobile-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--light-card-bg);
    z-index: 1002;
    padding: 20px;
    transition: var(--transition);
    box-shadow: 5px 0 15px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
}

.dark-mode .mobile-menu {
    background-color: var(--dark-card-bg);
}

.mobile-menu.active {
    left: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}
.dark-mode .mobile-menu-header {
    border-bottom-color: #333;
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 24px;
    color: #666;
    cursor: pointer;
}
.dark-mode .mobile-menu-close {
    color: #aaa;
}

.mobile-menu ul {
    list-style: none;
}
.mobile-menu ul li a {
    color: var(--light-text);
    font-size: 18px;
    font-weight: 500;
    display: block;
    padding: 10px 0;
}
.dark-mode .mobile-menu ul li a {
    color: var(--dark-text);
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

/* ===================================== */
/* == MAIN LAYOUT & RECORDER STYLES == */
/* ===================================== */
.page-content {
    display: grid;
    grid-template-columns: 1fr 3fr 1fr;
    gap: 30px;
    margin: 30px 0;
}

.sidebar-container {
    position: sticky;
    top: 100px;
    height: fit-content;
}
.sidebar-container h3 {
    margin-bottom: 15px;
    color: #888;
    font-size: 14px;
    text-transform: uppercase;
    text-align: center;
}
.ad-placeholder {
    background: linear-gradient(135deg, #f5f7fa, #e4e7eb);
    height: 600px;
    border-radius: var(--border-radius);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #aaa;
    border: 1px dashed #ddd;
}
.dark-mode .ad-placeholder {
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
    border: 1px dashed #444;
    color: #666;
}

/*
* CORRECTED LAYOUT FOR THE RECORDER ITSELF
*/
.recorder-wrapper {
    display: grid;
    /* Default: Stacks vertically for mobile */
    grid-template-columns: 1fr; 
    gap: 1.5rem;
    align-items: flex-start;
}

.video-container {
    position: relative;
    width: 100%;
    background-color: var(--light-card-bg);
    border: 1px solid #e0e0e0;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}
.dark-mode .video-container {
    background-color: var(--dark-card-bg);
    border-color: #333;
    box-shadow: var(--dark-box-shadow);
}
#video-preview {
    width: 100%;
    height: auto;
    display: block;
    background-color: #000;
    aspect-ratio: 16 / 9;
}
.placeholder-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #aaa;
    text-align: center;
    pointer-events: none;
}
.dark-mode .placeholder-text {
    color: #666;
}
.placeholder-text i {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}
#recording-indicator {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    display: none;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    z-index: 10;
}
#recording-indicator::before {
    content: '';
    width: 10px;
    height: 10px;
    background-color: var(--danger-color);
    border-radius: 50%;
    animation: blink 1.5s infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ===================================== */
/* == CONTROLS PANEL == */
/* ===================================== */
.controls-panel {
    background-color: var(--light-card-bg);
    border: 1px solid #e0e0e0;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
}
.dark-mode .controls-panel {
    background-color: var(--dark-card-bg);
    border-color: #333;
    box-shadow: var(--dark-box-shadow);
}
#results-container p {
    color: #666;
}
.dark-mode #results-container p {
    color: #aaa;
}
.control-group { margin-bottom: 1.5rem; }
.control-group h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.5rem;
}
.dark-mode .control-group h3 {
    border-bottom-color: #333;
}
.checkbox-group label, .select-group label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
}
.select-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
select {
    width: 100%;
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid #ddd;
    background-color: var(--light-bg);
    color: var(--light-text);
}
.dark-mode select {
    background-color: var(--dark-bg);
    border-color: #444;
    color: var(--dark-text);
}
select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.action-buttons button, .action-buttons a button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 12px 25px;
    margin-bottom: 0.5rem;
    border: none;
  
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.action-buttons a {
    display: block;
    width: 100%;
}
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.hotkey-tooltip {
    font-size: 0.75rem;
    font-weight: 400;
    background-color: rgba(0,0,0,0.1);
    color: inherit;
    opacity: 0.7;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(0,0,0,0.1);
    margin-left: auto;
}
.dark-mode .hotkey-tooltip {
    background-color: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.1);
}

#start-button { background-color: var(--primary-color); color: white; }
#start-button:not(:disabled):hover { background-color: var(--secondary-color); }
#screenshot-button { background-color: var(--success-color); color: white; }
#screenshot-button:not(:disabled):hover { background-color: #1a9c4a; }
#stop-button { background-color: var(--danger-color); color: white; }
#stop-button:not(:disabled):hover { background-color: var(--danger-hover-color); }
#pause-resume-button { background-color: var(--warning-color); color: white; }
#pause-resume-button:not(:disabled):hover { background-color: #d88c0a; }

#download-button button { background-color: var(--success-color); color: white; }
#record-again-button { background-color: var(--primary-color); color: white; }


/* ===================================== */
/* == OVERLAYS & MODALS == */
/* ===================================== */
#countdown-overlay, #annotation-modal, #instruction-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: 1rem;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
#countdown-overlay {
    display: none;
}
#annotation-modal {
    display: none;
}
#instruction-modal.hidden {
    opacity: 0;
    visibility: hidden;
}

#countdown-timer {
    font-size: 10rem;
    color: white;
    font-weight: bold;
    animation: countdown-zoom 1s infinite;
}
@keyframes countdown-zoom {
    from { transform: scale(1); opacity: 1; }
    to { transform: scale(1.5); opacity: 0; }
}

.annotation-content, .instruction-content {
    background-color: var(--light-card-bg);
    color: var(--light-text);
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--dark-box-shadow);
    max-width: 95vw;
    max-height: 95vh;
    display: flex;
    flex-direction: column;
}
.dark-mode .annotation-content, .dark-mode .instruction-content {
    background-color: var(--dark-card-bg);
    color: var(--dark-text);
}
.instruction-content {
    max-width: 600px;
    padding: 2rem;
}
.instruction-content h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.dark-mode .instruction-content h3 { color: var(--accent-color); }
.instruction-content p { color: #666; margin-bottom: 1rem; }
.dark-mode .instruction-content p { color: #aaa; }
.instruction-content ul { list-style: none; padding: 0; margin-bottom: 1.5rem; }
.instruction-content li {
    background-color: var(--light-bg);
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    border-left: 4px solid var(--primary-color);
}
.dark-mode .instruction-content li {
    background-color: var(--dark-bg);
    border-left-color: var(--accent-color);
}
.instruction-content kbd {
    background-color: #e0e0e0;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}
.dark-mode .instruction-content kbd { background-color: #444; }
#close-instruction-btn {
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
#close-instruction-btn:hover { background-color: var(--secondary-color); }

#annotation-toolbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
    flex-wrap: wrap;
}
.dark-mode #annotation-toolbar { border-bottom-color: #333; }
#annotation-toolbar button {
    background: var(--light-bg);
    border: 1px solid #ddd;
    color: #666;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
}
.dark-mode #annotation-toolbar button {
    background: var(--dark-bg);
    border-color: #444;
    color: #aaa;
}
#annotation-toolbar button.active, #annotation-toolbar button:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}
#annotation-toolbar input[type="color"] {
    width: 36px;
    height: 36px;
    border: 1px solid #ddd;
    padding: 2px;
    background: none;
    cursor: pointer;
    border-radius: 6px;
}
.dark-mode #annotation-toolbar input[type="color"] { border-color: #444; }
#annotation-toolbar input[type="range"] { width: 100px; }
#annotation-canvas-container {
    position: relative;
    max-width: 85vw;
    max-height: 70vh;
    overflow: auto;
    background: repeating-conic-gradient(#f0f0f0 0% 25%, #fff 0% 50%) 50% / 20px 20px;
}
.dark-mode #annotation-canvas-container {
    background: repeating-conic-gradient(#1a1a1a 0% 25%, #222 0% 50%) 50% / 20px 20px;
}
#annotation-canvas-container canvas { position: absolute; top: 0; left: 0; }
#drawing-canvas { cursor: crosshair; }
.annotation-buttons { display: flex; gap: 1rem; justify-content: flex-end; margin-top: 1rem; }
#download-annotation-btn, #cancel-annotation-btn {
    padding: 8px 16px;
    border-radius: 50px;
    border: none;
    font-weight: 600;
    cursor: pointer;
}
#download-annotation-btn { background-color: var(--primary-color); color: white; }
#cancel-annotation-btn { background-color: transparent; border: 1px solid #ddd; }
.dark-mode #cancel-annotation-btn { border-color: #444; }

/* ===================================== */
/* == FOOTER == */
/* ===================================== */
footer {
    background-color: #1a1a2e;
    color: #ffffff;
    padding: 60px 0 20px;
    margin-top: 60px;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}
.footer-about .logo { font-size: 28px; margin-bottom: 15px; }
.footer-about .logo a { color: #fff; }
.footer-about p { color: #aaa; margin-bottom: 20px; }
.footer-links h3 {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 18px;
    position: relative;
    padding-bottom: 10px;
}
.footer-links h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background-color: var(--accent-color);
}
.footer-links ul { list-style: none; }
.footer-links ul li { margin-bottom: 12px; }
.footer-links ul li a { color: #aaa; }
.footer-links ul li a:hover { color: var(--accent-color); padding-left: 5px; }
.social-links { display: flex; gap: 15px; margin-top: 15px; }
.social-links a {
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.social-links a:hover {
    background-color: var(--accent-color);
    color: #000;
    transform: translateY(-3px);
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    color: #aaa;
    font-size: 14px;
}

/* ===================================== */
/* == RESPONSIVE DESIGN == */
/* ===================================== */

/*
* CORRECTED: Responsive layout for the recorder's internal grid
*/
@media (min-width: 992px) {
    .recorder-wrapper {
        /* On larger screens, switch to the side-by-side layout like the screenshot */
        grid-template-columns: 1fr 350px; 
    }
}


@media (max-width: 1200px) {
    .page-content {
        grid-template-columns: 3fr 1fr;
    }
    .page-content .sidebar-container:first-of-type {
        display: none;
    }
}

@media (max-width: 991px) {
    .page-content {
        grid-template-columns: 1fr;
    }
    .sidebar-container {
        display: none;
    }
}

@media (max-width: 767px) {
    nav ul { display: none; }
    .mobile-menu-btn { display: block; }
}