@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;600;700;800&display=swap');

:root {
    --primary: #0ea5e9;      /* Sky Blue - Modern Medical */
    --primary-dark: #0284c7; /* Darker Blue for hover */
    --accent: #14b8a6;       /* Teal - Growth/Health */
    --dark: #0f172a;         /* Slate 900 - Premium Text/Backgrounds */
    --dark-light: #1e293b;   /* Slate 800 - Cards/Sections */
    --light: #f8fafc;        /* Slate 50 - Background */
    --white: #ffffff;
    --gray: #64748b;         /* Slate 500 - Subtext */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.4);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Cairo', sans-serif;
    background-color: var(--light);
    color: var(--dark);
    overflow-x: hidden;
    scroll-behavior: smooth;
    line-height: 1.6;
}

[dir="rtl"] body {
    text-align: right;
}

[dir="ltr"] body {
    text-align: left;
}

[dir="rtl"] .text-start {
    text-align: right !important;
}

[dir="ltr"] .text-start {
    text-align: left !important;
}

[dir="ltr"] .nav-links li a::after {
    right: auto;
    left: 0;
}

/* Glassmorphism Classes */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.glass-dark {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--white);
}

/* Custom Typography & Utility */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

p {
    color: var(--gray);
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--primary-dark);
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient {
    background: linear-gradient(135deg, var(--dark), var(--dark-light));
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Base Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #0369a1);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.4);
    color: var(--white);
}

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

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(14, 165, 233, 0.05);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links li a {
    color: var(--dark);
    font-weight: 600;
    font-size: 1rem;
    position: relative;
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-links li a.active {
    color: var(--primary);
}

.nav-links li a:hover::after,
.nav-links li a.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

/* Dark Theme Navbar (for Contact page) */
.navbar.dark-theme:not(.scrolled) .nav-links li a,
.navbar.dark-theme:not(.scrolled) .logo,
.navbar.dark-theme:not(.scrolled) .lang-switch {
    color: var(--white);
}

.navbar.dark-theme:not(.scrolled) .nav-links li a::after {
    background: var(--primary);
}

.navbar.dark-theme:not(.scrolled) .btn-outline {
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--white);
}

.navbar.dark-theme:not(.scrolled) .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-color: var(--white);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

@keyframes pulse-glow {
    0% { box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(14, 165, 233, 0); }
    100% { box-shadow: 0 0 0 0 rgba(14, 165, 233, 0); }
}

.animate-fade-up {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    opacity: 0;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Add mobile menu later */
    }
    .nav-actions .btn-login {
        display: none;
    }
    .hero-content {
        text-align: center;
        padding-top: 100px;
    }
}