/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@600;700&family=Tajawal:wght@400;500;600&display=swap');

:root {
    --primary: #38BDF8;
    --accent: #F59E0B;
    --dark-bg: #0F172A;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text: #E2E8F0;
    --text-strong: #FFFFFF;
}

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

body {
    font-family: 'Tajawal', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Cairo', sans-serif;
    font-weight: 700;
    color: var(--text-strong);
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--dark-bg), #1e293b);
    overflow: hidden;
}

.hero-section::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
    z-index: 0;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-section h1 {
    font-size: 3.2rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 10px rgba(56, 189, 248, 0.2);
}

.hero-section p.lead {
    font-size: 1.4rem;
    opacity: 0.95;
    margin-bottom: 2.5rem;
    line-height: 1.6;
    color: var(--text);
}

.btn {
    border-radius: 50px;
    padding: 12px 32px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--primary), #0EA5E9);
    border: none;
    color: white;
}

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.5);
}

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

.btn-outline-light:hover {
    background: rgba(56, 189, 248, 0.15);
    transform: translateY(-3px);
}

/* Reasons Cards */
.reason-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    padding: 2rem;
    height: 100%;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
}

.reason-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    border-color: var(--primary);
}

.reason-card .fs-1 {
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1.2rem;
    font-size: 2.5rem;
}

.reason-card .card-title {
    color: var(--text-strong);
    margin-bottom: 0.8rem;
}

/* Registration Modal */
.modal-content {
    background: linear-gradient(160deg, #1e293b, #0F172A);
    border: none;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

.modal-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 2rem;
}

.modal-title {
    font-size: 1.8rem;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.form-control {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text);
    padding: 12px 16px;
    border-radius: 12px;
    transition: all 0.3s;
}

.form-control:focus {
    background: rgba(30, 41, 59, 0.8);
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(56, 189, 248, 0.25);
    color: var(--text);
}

.form-control::placeholder {
    color: rgba(226, 232, 240, 0.6);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.shake {
    animation: shake 0.6s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-8px); }
    20%, 40%, 60%, 80% { transform: translateX(8px); }
}

.is-invalid {
    border-color: #f87171 !important;
    background: rgba(248, 113, 113, 0.1);
}

.invalid-feedback {
    color: #f87171;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

@media (max-width: 768px) {
    .hero-section h1 { font-size: 2.2rem; }
    .hero-section p.lead { font-size: 1.1rem; }
    .btn { padding: 10px 24px; font-size: 1rem; }
}