/* ========================================
   COMMON STYLES - Global Variables & Base Styles
   استخدام CSS Variables للألوان والقيم الموحدة
   ======================================== */

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

:root {
    /* Colors */
    --primary-blue: #0066cc;
    --primary-aqua: #1E90FF;
    --secondary-light: #00BFFF;
    --warning-yellow: #FFDD00;
    --success-green: #00CC00;

    /* New Color Variables */
    --color-primary: #0066cc;
    --color-primary-dark: #003d82;
    --color-primary-darker: #00509e;
    --color-accent: #1E90FF;
    --color-accent-light: #00BFFF;
    --color-success: #00aa00;
    --color-text-dark: #1a1a1a;
    --color-text-light: #666666;
    --color-light-bg: #f5f7fa;

    /* Dark/Light */
    --bg-dark: #003d82;
    --bg-light: #f5f7fa;
    --text-dark: #1a1a1a;
    --text-light: #666666;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0066cc 0%, #003d82 100%);
    --gradient-dark: linear-gradient(135deg, #0066cc 0%, #00509e 50%, #003d82 100%);
    --gradient-light: linear-gradient(135deg, #f5f7fa 0%, #fff 100%);

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Typography */
    --font-family: 'Poppins', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.95rem;
    --font-size-lg: 1.2rem;
    --font-size-xl: 1.5rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease;
}

/* ========================================
   BASE STYLES
   ======================================== */

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-dark);
    line-height: 1.6;
    background: #fff;
    overflow-x: hidden;
    padding-top: 60px;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-normal);
}

/* ========================================
   CONTAINER & GRID
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 4rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.8rem;
}

h4 {
    font-size: 1.3rem;
}

p {
    margin-bottom: var(--spacing-md);
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    h3 {
        font-size: 1.3rem;
    }
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    text-align: center;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-dark);
    color: #fff;
}

.btn-primary:hover {
    background: #00509e;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 102, 204, 0.35);
}

.btn-secondary {
    background: #0091d5;
    color: #fff;
}

.btn-secondary:hover {
    background: #0066cc;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 145, 213, 0.35);
}

.btn-outline-light {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-outline-light:hover {
    background: #fff;
    color: var(--primary-blue);
}

.btn-light {
    background: #fff;
    color: var(--primary-blue);
}

.btn-light:hover {
    background: rgba(255, 255, 255, 0.9);
}

.btn-lg {
    padding: 0.9rem 2rem;
    font-size: 1.1rem;
}

/* ========================================
   NAVBAR STYLES (Bootstrap handles navbar structure)
   ======================================== */

/* Custom navbar styling overrides */
.navbar {
    padding: 1rem 6rem !important;
    background: #fff !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
    z-index: 1000 !important;
}

.navbar .container {
    padding-left: 0;
    padding-right: 0;
}

/* Mobile responsive navbar */
@media (max-width: 991px) {
    .navbar {
        padding: 1rem 1.5rem !important;
    }

    .navbar-collapse {
        margin-top: 1rem;
    }

    .navbar-nav {
        text-align: center;
    }

    .nav-link {
        padding: 0.75rem 1rem !important;
    }

    .donate-link {
        display: inline-block;
        margin: 0.5rem auto !important;
    }
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.navbar-brand img {
    height: 40px;
}

.brand-text {
    background: var(--gradient-dark);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Nav link styling */
.nav-link {
    font-weight: 500;
    position: relative;
    margin-right: 0.5rem;
}

.donate-link {
    background: var(--gradient-dark);
    color: #fff !important;
    border-radius: 10px;
    padding: 0.65rem 1.25rem;
    box-shadow: 0 10px 25px rgba(0, 144, 255, 0.25);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), opacity var(--transition-normal);
}

.donate-link::after {
    display: none;
}

.donate-link:active,
.donate-link:focus {
    color: #fff !important;
    transform: translateY(0);
    box-shadow: 0 8px 18px rgba(0, 144, 255, 0.25);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #0066cc;
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: #0066cc !important;
}

.donate-link:hover {
    color: #fff !important;
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(0, 144, 255, 0.35);
    opacity: 0.95;
}

/* ========================================
   FOOTER STYLES (Bootstrap classes handle layout)
   ======================================== */

.footer {
    background: #1a1a1a;
    margin-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Footer headings */
.footer h5 {
    color: #fff;
}

/* Footer text styling */
.footer .text-secondary {
    color: rgba(255, 255, 255, 0.7) !important;
}

.footer a {
    transition: color var(--transition-normal);
}

.footer .text-secondary a:hover {
    color: var(--primary-aqua) !important;
}

/* Social buttons - custom styling */
.footer .btn-outline-secondary {
    border-color: rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.7);
    width: 45px;
    height: 45px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer .btn-outline-secondary:hover {
    background: #0066cc;
    border-color: #0066cc;
    color: #fff;
    transform: translateY(-3px);
}

/* Footer divider */
.footer hr {
    border-color: rgba(255, 255, 255, 0.1);
}

/* ========================================
   SECTION STYLES
   ======================================== */

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.8rem;
    }
}

/* ========================================
   UTILITIES
   ======================================== */

.text-center {
    text-align: center;
}

.mt-5 {
    margin-top: 3rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.py-5 {
    padding: 3rem 0;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}