/* ===== CSS VARIABLES ===== */
:root {
    /* Dark Theme (Default) */
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --bg-gradient-animated: 
        radial-gradient(circle at 20% 80%, rgba(56, 189, 248, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(129, 140, 248, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    --header-bg: rgba(30, 41, 59, 0.7);
    --card-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
    --highlight-bar: var(--accent-gradient);
    --completed-bg: linear-gradient(135deg, #334155 0%, #475569 100%);
    --completed-text: #e2e8f0;
    --completed-border: #64748b;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.4);
    
    --border-radius-sm: 12px;
    --border-radius-md: 20px;
    --border-radius-lg: 28px;
    
    /* iOS Safe Area Support */
    --safe-area-inset-top: env(safe-area-inset-top);
    --safe-area-inset-right: env(safe-area-inset-right);
    --safe-area-inset-bottom: env(safe-area-inset-bottom);
    --safe-area-inset-left: env(safe-area-inset-left);
}

body.light-theme {
    /* Light Theme */
    --bg-gradient: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    --bg-gradient-animated:
        radial-gradient(circle at 20% 80%, rgba(56, 189, 248, 0.15) 0%, transparent 60%),
        radial-gradient(circle at 80% 20%, rgba(129, 140, 248, 0.15) 0%, transparent 60%);
    --header-bg: rgba(255, 255, 255, 0.7);
    --card-bg: #ffffff;
    --glass-border: rgba(0, 0, 0, 0.08);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
    --highlight-bar: var(--accent-gradient);
    --completed-bg: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    --completed-text: #334155;
    --completed-border: #cbd5e1;
}

/* ===== BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html[lang="ar"] {
    font-family: 'Cairo', sans-serif;
}

html[lang="fa"] {
    font-family: 'Vazirmatn', sans-serif;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-gradient);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background 0.4s ease, color 0.4s ease;
    /* iOS smooth scrolling */
    -webkit-overflow-scrolling: touch;
    /* iOS safe area padding */
    padding-left: var(--safe-area-inset-left);
    padding-right: var(--safe-area-inset-right);
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-gradient-animated);
    z-index: -1;
    animation: backgroundFloat 20s ease-in-out infinite;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    body::before {
        animation: none;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes backgroundFloat {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(1deg); }
}

@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* ===== LAYOUT ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== HEADER ===== */
.header {
    background: var(--header-bg);
    backdrop-filter: blur(32px);
    border: 1px solid var(--glass-border);
    padding: 2rem 0;
    margin-bottom: 2rem;
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    /* iOS safe area padding */
    padding-top: calc(2rem + var(--safe-area-inset-top));
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--highlight-bar);
}

.header h1 {
    text-align: center;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.header-controls {
    position: absolute;
    top: calc(1.5rem + var(--safe-area-inset-top));
    right: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: center;
}

[dir="rtl"] .header-controls {
    right: auto;
    left: 1.5rem;
}

.theme-toggle, 
.language-select {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 0.75rem; /* Increased for better touch targets */
    border-radius: 50px;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    /* Better touch targets for mobile */
    min-width: 44px;
    min-height: 44px;
    /* iOS tap highlight */
    -webkit-tap-highlight-color: rgba(56, 189, 248, 0.2);
    /* RTL support */
    direction: ltr;
}

.language-select {
    padding: 0.75rem 1rem;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-repeat: no-repeat;
    background-position: right 0.7rem center;
    padding-right: 2.5rem;
    min-width: 80px;
    text-align: center;
    font-weight: 600;
}

[dir="rtl"] .language-select {
    background-position: left 0.7rem center;
    padding-right: 1rem;
    padding-left: 2.5rem;
}

.theme-toggle:hover, 
.language-select:hover,
.theme-toggle:active,
.language-select:active {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== COUNTERS ===== */
.counters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.counter-card {
    background: rgba(0,0,0,0.1);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 1.5rem 1rem;
    border-radius: var(--border-radius-sm);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    /* iOS tap highlight */
    -webkit-tap-highlight-color: rgba(56, 189, 248, 0.2);
}

.counter-card:hover,
.counter-card:active {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl);
    background: var(--accent-gradient);
    color: white;
}

.counter-card:hover .counter-number,
.counter-card:active .counter-number {
    -webkit-text-fill-color: white;
    color: white;
}

.counter-card:hover .counter-label,
.counter-card:active .counter-label {
     color: white;
}

.counter-number {
    font-size: clamp(2rem, 3.5vw, 2.5rem);
    font-weight: 800;
    display: block;
    margin-bottom: 0.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.4s ease;
    line-height: 1;
}

.counter-label {
    font-size: 0.9rem;
    font-weight: 600;
    opacity: 0.9;
    letter-spacing: 0.3px;
    line-height: 1.2;
    color: var(--text-secondary);
}

/* ===== FILTERS ===== */
.filter-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.search-wrapper {
    flex: 1 1 100%;
    min-width: 250px;
    position: relative;
}

.search-input {
    width: 100%;
    height: 100%;
    padding: 1.25rem 1.25rem 1.25rem 3.5rem;
    border: none;
    border-radius: 50px;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    font-weight: 500;
    color: var(--text-primary);
    /* Better mobile input handling */
    -webkit-appearance: none;
    -webkit-tap-highlight-color: rgba(56, 189, 248, 0.2);
    min-height: 44px; /* iOS minimum touch target */
}

[dir="rtl"] .search-input {
    padding: 1.25rem 3.5rem 1.25rem 1.25rem;
}

.search-input:focus {
    outline: none;
    box-shadow: var(--shadow-lg), 0 0 0 4px rgba(56, 189, 248, 0.2);
    transform: translateY(-2px);
}

.search-input::placeholder {
    color: var(--text-muted);
    font-weight: 500;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    opacity: 0.6;
    pointer-events: none;
}

[dir="rtl"] .search-icon {
    left: auto;
    right: 1.25rem;
}

.select-wrapper {
    flex: 1 1 15%;
    min-width: 180px;
    position: relative;
}

.filter-select {
    width: 100%;
    height: 100%;
    padding: 1.25rem 1.25rem;
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    background-color: var(--card-bg);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    background-repeat: no-repeat;
    background-position: right 1.25rem center;
    padding-right: 3.5rem;
    /* Better mobile select handling */
    -webkit-tap-highlight-color: rgba(56, 189, 248, 0.2);
    min-height: 44px; /* iOS minimum touch target */
}

.filter-select option {
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 10px;
}

[dir="rtl"] .filter-select {
    padding-right: 1.25rem;
    padding-left: 3.5rem;
    background-position: left 1.25rem center;
}

.filter-select:focus {
    outline: none;
    box-shadow: var(--shadow-lg), 0 0 0 4px rgba(56, 189, 248, 0.2);
    transform: translateY(-2px);
}

/* ===== EVENTS GRID ===== */
.events-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 columns on desktop */
    gap: 1.5rem;
    margin: 2rem 0;
    padding: 1rem 0;
    align-items: stretch;
}

.events-separator {
    grid-column: 1 / -1;
    text-align: center;
    padding: 2rem 0 1rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.events-separator::before, 
.events-separator::after {
    content: '';
    position: absolute;
    top: 50%;
    width: calc(50% - 150px);
    height: 2px;
    background: var(--glass-border);
    border-radius: 2px;
}

.events-separator::before { left: 0; }
.events-separator::after { right: 0; }

[dir="rtl"] .events-separator::before { right: 0; left: auto; }
[dir="rtl"] .events-separator::after { left: 0; right: auto; }

/* ===== EVENT CARDS ===== */
.event-item {
    display: block;
    color: inherit;
    text-decoration: none;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    /* iOS tap highlight */
    -webkit-tap-highlight-color: rgba(56, 189, 248, 0.2);
}

.event-item[href]:not([href="#"]) {
    cursor: pointer;
}

.event-item[href]:not([href="#"]) .event-card:hover,
.event-item[href]:not([href="#"]) .event-card:active {
    transform: translateY(-8px) rotateX(2deg);
    box-shadow: var(--shadow-lg);
}

.event-item[href]:not([href="#"]) .event-card:hover::before,
.event-item[href]:not([href="#"]) .event-card:active::before { 
    transform: scaleX(1); 
}

.event-card {
    background: var(--card-bg);
    backdrop-filter: blur(32px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
    min-height: 450px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Performance optimization for mobile */
@media (max-width: 768px) {
    .event-card {
        backdrop-filter: blur(16px); /* Reduced blur for better performance */
    }
}

.event-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--highlight-bar);
    transform: scaleX(0);
    transition: transform 0.4s ease;
    transform-origin: left;
}

[dir="rtl"] .event-card::before {
    transform-origin: right;
}

.event-card.completed {
    background: var(--completed-bg);
    color: var(--completed-text);
    border: 1px solid var(--completed-border);
}

.event-card.completed::before { 
    background: var(--completed-border); 
}

.event-card.completed .event-title,
.event-card.completed .event-description,
.event-card.completed .detail-item { 
    color: var(--completed-text); 
}

.event-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    min-height: 60px;
}

.country-flag {
    font-size: 2rem;
    filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.1));
}

.event-title {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    font-weight: 700;
    flex: 1;
    letter-spacing: -0.01em;
    line-height: 1.3;
    color: var(--text-primary);
    word-wrap: break-word;
    overflow-wrap: break-word;
    min-width: 0;
}

.event-status {
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    box-shadow: var(--shadow-sm);
    color: white;
    white-space: nowrap;
    flex-shrink: 0;
}

.status-completed { background: #64748b; }
.status-upcoming { background: #f59e0b; }

.event-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.8rem;
    margin: 1rem 0;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-sm);
    backdrop-filter: blur(10px);
}

body.light-theme .event-details { 
    background: rgba(0, 0, 0, 0.03); 
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    white-space: nowrap;
    color: var(--text-secondary);
}

.detail-icon { 
    font-size: 1rem; 
    opacity: 0.8; 
}

[dir="rtl"] .detail-item {
    gap: 0.8rem;
}

.event-description {
    margin-top: 1rem;
    line-height: 1.6;
    font-size: 0.95rem;
    font-weight: 400;
    flex-grow: 1;
    color: var(--text-secondary);
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
}

.event-footer {
    margin-top: auto;
    padding-top: 1rem;
}

.investment-highlight {
    background: linear-gradient(135deg, #10b981 0%, #22c55e 100%);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    text-align: center;
    box-shadow: var(--shadow-md);
    animation: pulse 3s ease-in-out infinite;
}

.countdown {
    background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    letter-spacing: 0.5px;
}

.investment-highlight + .countdown { 
    margin-top: 1rem; 
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .select-wrapper {
        flex-grow: 1;
        flex-basis: 0;
        min-width: 150px;
    }
    
    .events-grid {
        grid-template-columns: repeat(2, 1fr); /* 2 columns on tablets */
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem; /* Reduced padding for mobile */
    }
    
    .counters { 
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .events-grid { 
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .event-card { 
        min-height: 380px;
        padding: 1.25rem; /* Slightly reduced padding */
    }
    
    .header {
        padding: 1.5rem 0;
        padding-top: calc(1.5rem + var(--safe-area-inset-top));
    }
    
    .header-controls { 
        top: calc(1rem + var(--safe-area-inset-top));
        right: 1rem;
        gap: 0.75rem;
    }
    
    [dir="rtl"] .header-controls { 
        right: auto; 
        left: 1rem; 
    }
    
    .filter-controls {
        gap: 0.75rem;
    }
    
    .select-wrapper {
        min-width: 140px;
    }
    
    /* Improved mobile event details grid */
    .event-details {
        grid-template-columns: 1fr 1fr;
        gap: 0.6rem;
        padding: 0.8rem;
    }
}

/* ===== EXTRA SMALL MOBILE ===== */
@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .header h1 {
        font-size: clamp(2rem, 8vw, 2.5rem);
    }
    
    .counters {
        grid-template-columns: 1fr 1fr;
        gap: 0.8rem;
    }
    
    .counter-card {
        padding: 1rem 0.5rem;
        min-height: 100px;
    }
    
    .events-grid {
        grid-template-columns: 1fr;
        margin: 1rem 0;
    }
    
    .event-card {
        min-height: 350px;
        padding: 1rem;
    }
    
    .event-details {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .detail-item {
        font-size: 0.85rem;
    }
    
    .filter-controls {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .select-wrapper {
        min-width: unset;
    }
}

/* ===== iOS SPECIFIC FIXES ===== */
@supports (-webkit-touch-callout: none) {
    /* iOS Safari specific styles */
    .search-input,
    .filter-select {
        font-size: 16px; /* Prevents zoom on focus in iOS Safari */
    }
    
    .event-card {
        /* Reduced backdrop filter for better iOS performance */
        backdrop-filter: blur(20px);
    }
}

/* iOS 15.4+ safe area bottom padding */
@media (max-width: 768px) {
    body {
        padding-bottom: calc(1rem + var(--safe-area-inset-bottom));
    }
}