/*
 * FluenzoAI - Main Stylesheet
 * Core styles and variables - Light Mode Theme
 */

/* CSS Variables */
:root {
    /* Primary Colors */
    --primary: #0891b2;
    --primary-light: #22d3ee;
    --primary-dark: #0e7490;
    --secondary: #7c3aed;
    --secondary-light: #a78bfa;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Light Mode Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: rgba(15, 23, 42, 0.03);
    --bg-card-hover: rgba(15, 23, 42, 0.06);

    /* Text - Dark for light mode */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-disabled: #cbd5e1;

    /* Border */
    --border-color: rgba(15, 23, 42, 0.1);
    --border-hover: rgba(15, 23, 42, 0.15);
    --border-focus: #0891b2;

    /* Shadows - Softer for light mode */
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.12);
    --shadow-primary: 0 8px 24px rgba(8, 145, 178, 0.25);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
    --gradient-secondary: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50px;

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

    /* Category Colors */
    --social-color: #8b5cf6;
    --school-color: #0891b2;
    --home-color: #f59e0b;
    --realworld-color: #ef4444;

    /* Font */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-secondary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    color: var(--text-secondary);
}

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

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

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--danger) !important; }
.text-muted { color: var(--text-muted) !important; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(8, 145, 178, 0.35);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

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

.btn-danger {
    background: rgba(255, 107, 107, 0.2);
    border: 1px solid rgba(255, 107, 107, 0.3);
    color: var(--danger);
}

.btn-danger:hover {
    background: rgba(255, 107, 107, 0.3);
}

.btn-full {
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 14px;
    transition: var(--transition-normal);
}

.form-input:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.12);
}

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

.form-input-otp {
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 8px;
    color: var(--primary);
}

/* Cards */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 30px;
    transition: var(--transition-normal);
}

.card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 20px;
    display: none;
}

.alert.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: #059669;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #dc2626;
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(8, 145, 178, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Animation Classes */
.animate-fade-in { animation: fadeIn 0.3s ease forwards; }
.animate-fade-in-up { animation: fadeInUp 0.5s ease forwards; }
.animate-fade-in-down { animation: fadeInDown 0.5s ease forwards; }
.animate-slide-in-right { animation: slideInRight 0.5s ease forwards; }
.animate-slide-in-left { animation: slideInLeft 0.5s ease forwards; }
.animate-scale-in { animation: scaleIn 0.3s ease forwards; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-bounce { animation: bounce 1s ease infinite; }
.animate-float { animation: float 3s ease-in-out infinite; }

/* Staggered Animation */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    h3 { font-size: 1.1rem; }

    .card {
        padding: 20px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 14px;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }
}