/**
 * Vizzy AI Assistant - Custom Styles
 * Bootstrap 5.3 Overrides and Custom Styling
 */

/* ========================================
   CSS Variables & Theme
   ======================================== */
:root {
    /* Primary Colors */
    --vizzy-primary: #4f46e5;
    --vizzy-primary-dark: #4338ca;
    --vizzy-primary-light: #6366f1;

    /* Secondary Colors */
    --vizzy-secondary: #06b6d4;
    --vizzy-secondary-dark: #0891b2;

    /* Neutrals */
    --vizzy-dark: #1e293b;
    --vizzy-gray: #64748b;
    --vizzy-light: #f1f5f9;
    --vizzy-white: #ffffff;

    /* Status Colors */
    --vizzy-success: #10b981;
    --vizzy-warning: #f59e0b;
    --vizzy-danger: #ef4444;
    --vizzy-info: #3b82f6;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-base: all 0.3s ease;
}

/* ========================================
   Global Styles
   ======================================== */
* {
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--vizzy-dark);
    background-color: var(--vizzy-light);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    margin: 0;
    padding: 0;
}

.container,
.container-fluid {
    max-width: 100%;
    overflow-x: hidden;
}

/* ========================================
   Navigation
   ======================================== */
#main-navbar {
    background: var(--vizzy-white);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid #e2e8f0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--vizzy-primary) !important;
}

.navbar-brand:hover {
    color: var(--vizzy-primary-dark) !important;
}

.nav-link {
    color: var(--vizzy-gray) !important;
    font-weight: 500;
    transition: var(--transition-base);
}

.nav-link:hover {
    color: var(--vizzy-primary) !important;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    transition: var(--transition-base);
    border: none;
}

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

.btn-primary:hover {
    background: var(--vizzy-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline-primary:hover {
    background: var(--vizzy-primary);
    color: var(--vizzy-white);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--vizzy-secondary);
    color: var(--vizzy-white);
}

.btn-secondary:hover {
    background: var(--vizzy-secondary-dark);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
}

/* ========================================
   Cards
   ======================================== */
.card {
    border: none;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    background: var(--vizzy-white);
    border-bottom: 1px solid #e2e8f0;
    font-weight: 600;
    padding: 1.25rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* ========================================
   Forms
   ======================================== */
.form-label {
    font-weight: 500;
    color: var(--vizzy-dark);
    margin-bottom: 0.5rem;
}

.form-control {
    border: 2px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    transition: var(--transition-base);
}

.form-control:focus {
    border-color: var(--vizzy-primary);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.1);
}

.form-control.is-invalid {
    border-color: var(--vizzy-danger);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 0.2rem rgba(239, 68, 68, 0.1);
}

.invalid-feedback {
    color: var(--vizzy-danger);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-check-input:checked {
    background-color: var(--vizzy-primary);
    border-color: var(--vizzy-primary);
}

/* ========================================
   Alerts
   ======================================== */
.alert {
    border: none;
    border-radius: 0.75rem;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-sm);
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
}

/* ========================================
   Hero Section
   ======================================== */
#hero-section {
    background: linear-gradient(135deg, var(--vizzy-primary) 0%, var(--vizzy-secondary) 100%);
    color: var(--vizzy-white);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

#hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,106.7C1248,96,1344,96,1392,96L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.5;
}

#hero-content {
    position: relative;
    z-index: 1;
}

#hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

#hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* ========================================
   Authentication Pages
   ======================================== */
#auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

#auth-card {
    max-width: 450px;
    width: 100%;
}

#auth-logo {
    text-align: center;
    margin-bottom: 2rem;
}

#auth-logo h1 {
    color: var(--vizzy-primary);
    font-size: 2.5rem;
    font-weight: 700;
}

#auth-form-container {
    background: var(--vizzy-white);
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
}

.auth-divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
}

.auth-divider span {
    background: var(--vizzy-white);
    padding: 0 1rem;
    color: var(--vizzy-gray);
    position: relative;
    z-index: 1;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e2e8f0;
}

.auth-link {
    color: var(--vizzy-primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-link:hover {
    color: var(--vizzy-primary-dark);
    text-decoration: underline;
}

/* ========================================
   Features Section
   ======================================== */
#features-section {
    padding: 5rem 0;
    background: var(--vizzy-white);
}

.feature-card {
    text-align: center;
    padding: 2rem;
    transition: var(--transition-base);
}

.feature-icon {
    font-size: 3rem;
    color: var(--vizzy-primary);
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--vizzy-dark);
}

.feature-description {
    color: var(--vizzy-gray);
    font-size: 0.95rem;
}

/* ========================================
   Footer
   ======================================== */
#main-footer {
    background: var(--vizzy-dark);
    color: var(--vizzy-white);
    padding: 2rem 0;
    margin-top: auto;
}

#footer-links a {
    color: var(--vizzy-white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition-base);
}

#footer-links a:hover {
    opacity: 1;
}

/* ========================================
   Utilities
   ======================================== */
.text-primary {
    color: var(--vizzy-primary) !important;
}

.bg-primary {
    background-color: var(--vizzy-primary) !important;
}

.shadow-custom {
    box-shadow: var(--shadow-lg);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    body {
        font-size: 0.95rem;
    }

    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

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

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

    #auth-form-container {
        padding: 2rem 1.5rem;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }

    .card {
        margin-left: 0;
        margin-right: 0;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    #hero-title {
        font-size: 2rem;
    }

    #hero-subtitle {
        font-size: 1.125rem;
    }

    #hero-section {
        padding: 4rem 0;
    }

    #auth-card {
        margin: 0 0.75rem;
    }

    #auth-form-container {
        padding: 1.5rem 1rem;
    }

    .btn {
        font-size: 0.9375rem;
        padding: 0.5rem 1rem;
    }
}

/* iPhone 12 Pro and similar (390px width) */
@media (max-width: 390px) {
    body {
        font-size: 0.9rem;
    }

    .container {
        padding-left: 0.625rem;
        padding-right: 0.625rem;
    }

    #auth-card {
        margin: 0 0.5rem;
    }

    #auth-form-container {
        padding: 1.25rem 0.875rem;
    }

    .btn {
        font-size: 0.875rem;
        padding: 0.5rem 0.875rem;
    }
}

/* ========================================
   Dark Mode Support (Future)
   ======================================== */
[data-theme="dark"] {
    /* Dark mode variables will be implemented in future phase */
}