:root {
    /* Colors */
    --primary-morning: #fb923c;
    --primary-night: #6366f1;
    --primary-fasting: #4ade80;
    --bg-dark: #1a2421;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(12px);
    
    /* Spacing */
    --safe-area-bottom: env(safe-area-inset-bottom, 20px);
}

/* View Management */
.view {
    display: none;
    flex-direction: column;
}

.view.active {
    display: flex;
}

/* RTL Support */
body.rtl {
    direction: rtl;
    font-family: 'Noto Sans Arabic', sans-serif;
}

body.rtl .post-header {
    flex-direction: row-reverse;
}

body.rtl .post-actions {
    flex-direction: row-reverse;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background Engine */
.app-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
}

.app-bg.morning { background-image: url('images/morning.png'); }
.app-bg.night { background-image: url('images/night.png'); }
.app-bg.meal { background-image: url('images/meal.png'); }

.bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(26, 36, 33, 0.2), rgba(26, 36, 33, 0.9));
}

/* Glass Components */
.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
}

/* Navigation */
nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 12px 24px calc(12px + var(--safe-area-bottom));
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 100;
    background: rgba(26, 36, 33, 0.8);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 10px;
    transition: color 0.3s ease;
}

.nav-item.active {
    color: var(--primary-morning);
}

.nav-icon {
    font-size: 20px;
    margin-bottom: 2px;
}

/* Main Content Area */
main {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    padding-bottom: 120px;
}

/* Ritual Hub Card */
.ritual-card {
    padding: 32px 24px;
    text-align: center;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
}

.ritual-title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.ritual-time {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.check-in-btn {
    background: linear-gradient(135deg, var(--primary-morning), #f97316);
    border: none;
    padding: 16px 48px;
    border-radius: 50px;
    color: white;
    font-weight: 600;
    font-size: 16px;
    box-shadow: 0 10px 25px rgba(249, 115, 22, 0.3);
    cursor: pointer;
    transition: transform 0.2s active, box-shadow 0.2s;
}

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

/* Feed Section */
.feed-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.post {
    margin-bottom: 16px;
    padding: 16px;
}

.post-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #475569;
}

.username {
    font-weight: 600;
    font-size: 14px;
}

.post-content {
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.post-actions {
    display: flex;
    gap: 20px;
    color: var(--text-muted);
    font-size: 13px;
}

/* Custom Scrollbar */
main::-webkit-scrollbar {
    width: 6px;
}
main::-webkit-scrollbar-track {
    background: transparent;
}
main::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

/* Multimedia Placeholders */
.media-content {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 12px;
    margin-bottom: 12px;
    border: 1px dashed rgba(255, 255, 255, 0.1);
}

.audio-wave {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 20px;
}

.wave-bar {
    width: 3px;
    background: var(--primary-morning);
    border-radius: 2px;
    animation: wave 1.2s ease-in-out infinite;
}

@keyframes wave {
    0%, 100% { height: 4px; }
    50% { height: 16px; }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeIn 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

/* Bottom Nav Glow */
.nav-glow {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 20px;
    background: var(--primary-morning);
    filter: blur(25px);
    opacity: 0.3;
    pointer-events: none;
}

/* Responsive adjustments */
@media (min-width: 768px) {
    body {
        max-width: 480px;
        margin: 0 auto;
        border-left: 1px solid var(--glass-border);
        border-right: 1px solid var(--glass-border);
        box-shadow: 0 0 100px rgba(0,0,0,0.5);
    }
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    width: 90%;
    max-width: 400px;
}