/* Premium Styles: Cyber-Neon Dark Glassmorphism */
:root {
    --bg-color: #05070a;
    --text-main: #f0f2f8;
    --text-muted: #8e95ac;
    --accent-primary: #00ffcc;
    --accent-primary-glow: rgba(0, 255, 204, 0.4);
    --accent-hover: #00ccaa;
    --accent-blue: #2a8ae2;
    --accent-pink: #ed2c91;
    --glass-bg: rgba(20, 25, 40, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow-x: hidden;
    transition: all 0.3s ease;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(42, 138, 226, 0.1), transparent 30%),
        radial-gradient(circle at 85% 30%, rgba(0, 255, 204, 0.1), transparent 30%);
}

body[dir="rtl"] { text-align: right; }

#app {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

/* Background animated glow orbs */
body::before, body::after {
    content: ''; position: fixed; border-radius: 50%; filter: blur(120px); z-index: 0; opacity: 0.15;
    animation: floatingGlow 15s infinite alternate ease-in-out;
}
body::before { top: 10%; left: 10%; width: 50vw; height: 50vw; background: var(--accent-primary); animation-delay: 0s; }
body::after { bottom: 10%; right: 10%; width: 40vw; height: 40vw; background: var(--accent-pink); animation-delay: -5s; }

@keyframes floatingGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10vw, 15vh) scale(1.1); }
}

/* Layout */
.screen { display: none; flex-direction: column; }
.screen.active { display: flex; }
.hidden { display: none !important; }
.mt-2 { margin-top: 1rem; } .mt-4 { margin-top: 2rem; } .mb-2 { margin-bottom: 0.5rem; }
.w-100 { width: 100%; } .text-center { text-align: center; }

/* Typography */
h1 { font-size: 2.5rem; font-weight: 800; margin-bottom: 0.5rem; letter-spacing: -1px; }
h2 { font-size: 1.2rem; margin-bottom: 1.5rem; color: var(--text-muted); font-weight: 400; }
h3 { margin-bottom: 0.5rem; font-size: 1.3rem; }
.glow { 
    background: linear-gradient(135deg, #fff, var(--accent-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 40px var(--accent-primary-glow);
}
h1.logo strong { color: var(--accent-primary); -webkit-text-fill-color: var(--accent-primary); }
.neon-text { color: var(--accent-primary); text-shadow: 0 0 15px var(--accent-primary-glow); }

/* Buttons */
.btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 1rem 1.5rem;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    font-family: inherit;
    position: relative;
    overflow: hidden;
}
.btn::after {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg); transition: 0.5s; opacity: 0;
}
.btn:hover:not(:disabled)::after { opacity: 1; transform: rotate(45deg) translate(50%, 50%); }
.btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    border-color: rgba(255,255,255,0.2);
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { 
    background: linear-gradient(135deg, rgba(42,138,226,0.15) 0%, rgba(0,255,204,0.1) 100%); 
    border: 1px solid rgba(0,255,204,0.3); 
}
.btn-neon { 
    background: var(--accent-primary); 
    color: #000; 
    border: none; 
    box-shadow: 0 0 25px var(--accent-primary-glow); 
    font-weight: 800;
}
.btn-neon:hover:not(:disabled) { 
    background: var(--accent-hover); 
    box-shadow: 0 0 40px rgba(0,255,204,0.6); 
}
.btn-back { 
    background: transparent; border: none; color: var(--text-muted); font-size: 1rem; 
    cursor: pointer; align-self: flex-start; margin-bottom: 1.5rem; font-family: inherit; 
    transition: color 0.2s; 
}
.btn-back:hover { color: var(--accent-primary); }

/* Forms */
.form-container {
    background: var(--glass-bg); border: 1px solid var(--glass-border); 
    border-radius: 20px; padding: 1.8rem; backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px); box-shadow: 0 15px 35px rgba(0,0,0,0.4);
}
.scrollable-form { max-height: 65vh; overflow-y: auto; padding-right: 0.5rem; }
.scrollable-form::-webkit-scrollbar { width: 6px; }
.scrollable-form::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 10px; }
.form-group { margin-bottom: 1.2rem; display: flex; flex-direction: column; }
.form-group label { margin-bottom: 0.5rem; font-size: 0.85rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;}
.form-group input, .form-group select {
    background: rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.1); color: #fff; padding: 0.9rem; 
    border-radius: 12px; font-family: inherit; font-size: 1rem; transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus {
    outline: none; border-color: var(--accent-primary); box-shadow: 0 0 10px var(--accent-primary-glow);
}
.form-group select option { background: #1a1e29; color: #fff; }

/* Dashboard Nav & Badges */
.top-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.banner-glass { 
    background: linear-gradient(90deg, rgba(0,255,204,0.1), rgba(42,138,226,0.1)); 
    border: 1px solid rgba(0,255,204,0.25); padding: 0.5rem 1.2rem; border-radius: 30px; 
    font-size: 0.85rem; cursor:pointer; font-weight: 600; color: var(--accent-primary);
}
.btn-secondary {
    background: transparent; border: 1px solid var(--text-muted); color: var(--text-muted);
    padding: 0.4rem 1rem; border-radius: 20px; text-transform: uppercase; font-size: 0.75rem; letter-spacing: 1px; transition: 0.2s; cursor: pointer;
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* Cards & Modules */
.card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.glass-card { 
    background: var(--glass-bg); border: 1px solid var(--glass-border); 
    border-radius: 20px; padding: 1.5rem; backdrop-filter: blur(15px); 
    -webkit-backdrop-filter: blur(15px); transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1); 
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.module-card { cursor: pointer; text-align: center; }
.module-card:hover { 
    border-color: rgba(0,255,204,0.4); 
    background: rgba(255,255,255,0.05); 
    transform: translateY(-8px); 
    box-shadow: 0 15px 35px rgba(0,255,204,0.15);
}
.card-icon { font-size: 2.8rem; margin-bottom: 1rem; filter: drop-shadow(0 4px 6px rgba(0,0,0,0.5)); }
.gender-img { width: 100%; max-width: 220px; height: 260px; object-fit: contain; display: block; margin: 0 auto; filter: drop-shadow(0 4px 6px rgba(0,0,0,0.5)); }

/* Chart Container */
.chart-container-wrapper {
    width: 100%;
    margin-top: 2rem;
    position: relative;
}

/* History Items */
.history-list { display: flex; flex-direction: column; gap: 0.8rem; }
.history-item { 
    background: linear-gradient(to right, rgba(255,255,255,0.03), rgba(255,255,255,0.01)); 
    padding: 1.2rem; border-radius: 14px; display: flex; justify-content: space-between; align-items:center; 
    border-left: 3px solid var(--accent-primary);
}
.history-val { color: var(--accent-primary); font-weight: 800; font-size: 1.5rem; text-shadow: 0 0 10px var(--accent-primary-glow); }

/* Live Video UI */
.camera-controls { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.camera-controls select { background: rgba(0,0,0,0.5); color: #fff; border: 1px solid var(--accent-primary); padding: 0.6rem; border-radius: 8px; }
.video-container {
    position: relative; width: 100%; aspect-ratio: 3/4; background: #000; border-radius: 20px; 
    overflow: hidden; border: 2px solid rgba(0,255,204,0.3); box-shadow: 0 10px 40px rgba(0,255,204,0.1);
}
.gender-card {
    flex: 1; background: rgba(0,0,0,0.4); border: 2px solid transparent; border-radius: 16px; padding: 0.8rem;
    cursor: pointer; transition: all 0.2s;
}
.gender-card:hover { background: rgba(255,255,255,0.05); }
.gender-card.selected { 
    border: 4px solid #00ffcc; 
    background: rgba(0, 255, 204, 0.3); 
    box-shadow: 0 0 50px rgba(0, 255, 204, 0.6); 
    transform: scale(1.05);
}
#webcam-video { width: 100%; height: 100%; object-fit: cover; }
#skeleton-canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; }
#ai-status-overlay {
    position: absolute; top: 1.2rem; left: 50%; transform: translateX(-50%); 
    background: rgba(0,0,0,0.8); color: var(--accent-primary); padding: 0.6rem 1.5rem; 
    border-radius: 30px; font-weight: 700; font-size: 0.9rem; border: 1px solid var(--accent-primary);
    box-shadow: 0 0 20px rgba(0,0,0,0.5); letter-spacing: 0.5px;
}
#countdown-overlay {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); 
    font-size: 7rem; color: #fff; text-shadow: 0 0 40px var(--accent-primary); font-weight: 800;
}

/* Animations */
.fade-in { animation: fadeIn 0.6s forwards cubic-bezier(0.2, 0.8, 0.2, 1); }
@keyframes fadeIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
.slide-up { animation: slideUp 0.7s forwards cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes slideUp { from { opacity: 0; transform: translateY(50px); } to { opacity: 1; transform: translateY(0); } }

/* Workout List */
.workout-list { display: flex; flex-direction: column; gap: 1.2rem; }
.workout-item { 
    display: flex; justify-content: space-between; align-items: center; 
    border-left: 3px solid var(--accent-blue); padding-left: 1.5rem;
}
.workout-sets { color: var(--accent-primary); font-size: 0.85rem; margin-top: 0.4rem; font-weight: 600; display:block; letter-spacing: 0.5px;}

/* Utils */
.text-muted { color: var(--text-muted); }