/* ===========================================
   CRLingua - Modern Minimalist Design System
   =========================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* === CSS Variables - CRLingua Brand Colors === */
:root {
    /* Brand Colors from Logo */
    --brand-turquoise: #00B4D8;
    --brand-orange: #F77F00;
    --brand-blue: #0077B6;
    --brand-cyan-light: #90E0EF;
    --brand-orange-dark: #DC5F00;

    /* Primary Colors - Based on Logo */
    --primary-gradient: linear-gradient(135deg, #00B4D8 0%, #0077B6 100%);
    --secondary-gradient: linear-gradient(135deg, #F77F00 0%, #DC5F00 100%);
    --accent-gradient: linear-gradient(135deg, #90E0EF 0%, #00B4D8 100%);
    --success-gradient: linear-gradient(135deg, #06D6A0 0%, #118AB2 100%);
    --purple-gradient: linear-gradient(135deg, #073B4C 0%, #0077B6 100%);
    --warm-gradient: linear-gradient(135deg, #F77F00 0%, #FFBA08 100%);

    /* Solid Colors - Brand Palette */
    --primary: #00B4D8;
    --primary-dark: #0077B6;
    --secondary: #F77F00;
    --accent: #90E0EF;
    --success: #06D6A0;
    --warning: #FFBA08;
    --danger: #EF476F;
    --purple: #073B4C;
    --orange: #F77F00;
    --blue: #0077B6;
    --cyan: #00B4D8;

    /* Neutral Colors - Light & Fresh */
    --bg-primary: #F8FAFB;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #E8F4F8;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F0F9FF;

    /* Text Colors */
    --text-primary: #073B4C;
    --text-secondary: #0A5A6D;
    --text-muted: #6B9AAD;

    /* Border & Shadow - Brand Colors */
    --border-color: #CAF0F8;
    --shadow-sm: 0 2px 8px rgba(0, 180, 216, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 180, 216, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 180, 216, 0.16);
    --shadow-glow: 0 0 30px rgba(0, 180, 216, 0.25);
    --shadow-colorful: 0 10px 40px rgba(0, 180, 216, 0.2);
    --shadow-orange: 0 10px 40px rgba(247, 127, 0, 0.2);

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

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* === Global Reset === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(0, 180, 216, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(247, 127, 0, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(144, 224, 239, 0.04) 0%, transparent 50%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* === Typography === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Outfit', 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--accent);
}

/* === Utility Classes === */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

.gradient-primary {
    background: var(--primary-gradient);
}

.gradient-secondary {
    background: var(--secondary-gradient);
}

.gradient-accent {
    background: var(--accent-gradient);
}

.gradient-success {
    background: var(--success-gradient);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
}

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

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

/* === Cards === */
.card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-colorful);
    border-color: var(--primary);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(to left, #F77F00 0%, #FFB95E 25%, #FFEED9 60%, #FFFFFF 100%);
    border-bottom: 1px solid rgba(247, 127, 0, 0.15);
    padding: var(--spacing-sm) 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: linear-gradient(to left, #F77F00 0%, #FFB95E 20%, #FFEED9 50%, #FFFFFF 100%);
    box-shadow: 0 4px 12px rgba(247, 127, 0, 0.15);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
}

.navbar-brand .logo {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.25);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: white;
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    align-items: center;
}

.navbar-menu a {
    color: var(--text-primary);
    font-weight: 600;
    transition: var(--transition-fast);
    position: relative;
}

.navbar-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition-normal);
}

.navbar-menu a:hover {
    color: var(--brand-turquoise);
}

.navbar-menu a:hover::after {
    width: 100%;
}

/* Softer button style for navbar */
.navbar-menu .btn {
    padding: 0.625rem 1.5rem;
    font-size: 0.95rem;
    background: var(--primary-gradient);
    color: white;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 180, 216, 0.2);
}

.navbar-menu .btn:hover {
    background: var(--secondary-gradient);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(247, 127, 0, 0.3);
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl) 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    opacity: 0.3;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 5%;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.2) 0%, rgba(144, 224, 239, 0.15) 100%);
    border-radius: 50%;
    filter: blur(80px);
    animation: float 8s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: 5%;
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, rgba(247, 127, 0, 0.2) 0%, rgba(220, 95, 0, 0.15) 100%);
    border-radius: 50%;
    filter: blur(80px);
    animation: float 6s ease-in-out infinite reverse;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) scale(1) rotate(0deg);
    }

    50% {
        transform: translateY(-40px) scale(1.15) rotate(5deg);
    }
}

.hero-content {
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* === Grid Layouts === */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-5 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* === Forms === */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 500;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1.25rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    background: var(--bg-secondary);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* === Loading Spinner === */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* === Alerts === */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-success {
    background: rgba(67, 233, 123, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(255, 56, 96, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-warning {
    background: rgba(255, 160, 10, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

/* === Responsive === */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .navbar-menu {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .grid-2,
    .grid-3,
    .grid-4,
    .grid-5 {
        grid-template-columns: 1fr;
    }
}

/* === Animations === */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease;
}