/* Obai Sukar Brand Styles */
:root {
    /* Primary Brand Colors */
    --obai-primary: #1a365d;          /* Deep blue from your brand */
    --obai-secondary: #2d89ef;        /* Microsoft blue from your background */
    --obai-accent: #00d4ff;           /* Cyan accent for highlights */
    --obai-purple: #8b5cf6;           /* Purple for premium feel */
    --obai-green: #10b981;            /* Success green */
    --obai-orange: #f59e0b;           /* Warning/attention orange */
    
    /* Text Colors */
    --obai-text-primary: #1a202c;     /* Dark text */
    --obai-text-secondary: #4a5568;   /* Gray text */
    --obai-text-light: #ffffff;       /* White text */
    
    /* Background Colors */
    --obai-bg-primary: #ffffff;       /* White background */
    --obai-bg-secondary: #f7fafc;     /* Light gray background */
    --obai-bg-dark: #1a202c;          /* Dark background */
    
    /* Gradients */
    --obai-gradient-primary: linear-gradient(135deg, #1a365d 0%, #2d89ef 50%, #00d4ff 100%);
    --obai-gradient-secondary: linear-gradient(45deg, #8b5cf6, #00d4ff);
    --obai-gradient-success: linear-gradient(45deg, #10b981, #34d399);
    --obai-gradient-warning: linear-gradient(45deg, #f59e0b, #fbbf24);
}

/* Typography */
.obai-font-primary {
    font-family: 'Cairo', 'Tajawal', -apple-system, BlinkMacSystemFont, sans-serif;
}

.obai-title {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--obai-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 2px 2px 4px rgba(26, 54, 93, 0.3);
}

.obai-subtitle {
    font-size: 1.25rem;
    color: var(--obai-text-secondary);
    font-weight: 500;
}

/* Buttons */
.obai-btn {
    background: var(--obai-gradient-primary);
    color: var(--obai-text-light);
    border: none;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: 0 8px 25px rgba(45, 137, 239, 0.4);
    transition: all 0.3s ease;
    cursor: pointer;
}

.obai-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(45, 137, 239, 0.6);
    background: linear-gradient(135deg, #00d4ff 0%, #2d89ef 50%, #1a365d 100%);
}

.obai-btn-secondary {
    background: transparent;
    border: 2px solid var(--obai-primary);
    color: var(--obai-primary);
}

.obai-btn-secondary:hover {
    background: var(--obai-primary);
    color: white;
}

/* Cards */
.obai-card {
    background: var(--obai-bg-primary);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(26, 54, 93, 0.1);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    overflow: hidden;
}

.obai-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 4px;
    background: var(--obai-gradient-primary);
}

.obai-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(26, 54, 93, 0.15);
    border-color: var(--obai-accent);
}

/* Course specific styles */
.course-lesson-card {
    position: relative;
    background: white;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.course-lesson-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 4px;
    background: var(--obai-gradient-primary);
}

.lesson-number-obai {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--obai-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.difficulty-beginner {
    background: var(--obai-gradient-success);
    color: white;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.85rem;
    font-weight: 600;
}

.difficulty-intermediate {
    background: var(--obai-gradient-warning);
    color: white;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.85rem;
    font-weight: 600;
}

.difficulty-advanced {
    background: var(--obai-gradient-secondary);
    color: white;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Hero Section */
.obai-hero {
    background: var(--obai-gradient-primary);
    position: relative;
    overflow: hidden;
}

.obai-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Pricing Cards */
.pricing-syria {
    background: var(--obai-gradient-success);
    color: white;
}

.pricing-international {
    background: var(--obai-gradient-primary);
    color: white;
}

/* Forms */
.obai-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: var(--obai-font-primary);
}

.obai-input:focus {
    outline: none;
    border-color: var(--obai-accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* Logo styles */
.obai-logo {
    height: 50px;
    width: auto;
}

.obai-logo-white {
    filter: brightness(0) invert(1);
}

/* Animations */
@keyframes obai-shimmer {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.obai-shimmer {
    background: linear-gradient(90deg, var(--obai-primary), var(--obai-accent), var(--obai-secondary), var(--obai-accent), var(--obai-primary));
    background-size: 200% 100%;
    animation: obai-shimmer 3s ease-in-out infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .obai-title {
        font-size: 2.5rem;
    }
    
    .lesson-number-obai {
        font-size: 2.5rem;
    }
    
    .obai-btn {
        padding: 12px 24px;
        font-size: 1rem;
    }
}