/* ============================================
   SORETA ELECTRONICS - UNIFIED THEME SYSTEM
   Modern Minimalistic Black & White Design
   ============================================ */

:root {
    /* Core Colors */
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;

    /* Theme Variables - Light Mode (Default) */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f5f5f5;
    --text-primary: #000000;
    --text-secondary: #525252;
    --text-tertiary: #737373;
    --border-color: #e5e5e5;
    --hover-overlay: rgba(0, 0, 0, 0.05);
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.12);

    /* Accent Colors */
    --accent-primary: #000000;
    --accent-hover: #262626;
    --accent-light: #f5f5f5;

    /* Status Colors */
    --success: #16a34a;
    --warning: #ea580c;
    --error: #dc2626;
    --info: #0891b2;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #171717;
    --bg-tertiary: #262626;
    --text-primary: #fafafa;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --border-color: #262626;
    --hover-overlay: rgba(255, 255, 255, 0.05);
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.5);

    --accent-primary: #ffffff;
    --accent-hover: #fafafa;
    --accent-light: #262626;
}

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

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-base), color var(--transition-base);
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.lead {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

/* Primary Button - Black background */
.btn-primary,
.btn-dark {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.btn-primary:hover,
.btn-dark:hover {
    background: var(--gray-800);
    border-color: var(--gray-800);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .btn-primary,
[data-theme="dark"] .btn-dark {
    background: var(--white);
    color: var(--black);
    border-color: var(--white);
}

[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] .btn-dark:hover {
    background: var(--gray-100);
    border-color: var(--gray-100);
    color: var(--black);
}

/* Secondary Button - White/Outlined */
.btn-secondary,
.btn-light,
.btn-outline-primary,
.btn-outline-dark {
    background: var(--white);
    color: var(--black);
    border-color: var(--border-color);
}

.btn-secondary:hover,
.btn-light:hover,
.btn-outline-primary:hover,
.btn-outline-dark:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--black);
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-secondary,
[data-theme="dark"] .btn-light,
[data-theme="dark"] .btn-outline-primary,
[data-theme="dark"] .btn-outline-dark {
    background: transparent;
    color: var(--white);
    border-color: var(--border-color);
}

[data-theme="dark"] .btn-secondary:hover,
[data-theme="dark"] .btn-light:hover,
[data-theme="dark"] .btn-outline-primary:hover,
[data-theme="dark"] .btn-outline-dark:hover {
    background: var(--bg-tertiary);
    border-color: var(--gray-600);
    color: var(--white);
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Disabled State */
.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--card-shadow);
}

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

.card-header {
    padding: 1.25rem 1.5rem;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

/* ============================================
   NAVBAR
   ============================================ */

.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(10, 10, 10, 0.8);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary) !important;
    letter-spacing: -0.02em;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color var(--transition-fast);
}

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

/* ============================================
   FORMS
   ============================================ */

.form-control,
.form-select {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--black);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
    outline: none;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    border-color: var(--white);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.form-label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: var(--black);
    color: var(--white);
}

.badge-secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

[data-theme="dark"] .badge-primary {
    background: var(--white);
    color: var(--black);
}

[data-theme="dark"] .badge-secondary {
    background: var(--gray-700);
    color: var(--gray-200);
}

/* Status Badges */
.badge-scheduled {
    background: var(--gray-100);
    color: var(--gray-900);
}

.badge-in-progress {
    background: #fef3c7;
    color: #92400e;
}

.badge-completed {
    background: #d1fae5;
    color: #065f46;
}

.badge-cancelled {
    background: #fee2e2;
    color: #991b1b;
}

[data-theme="dark"] .badge-scheduled {
    background: var(--gray-800);
    color: var(--gray-100);
}

/* ============================================
   ANIMATIONS
   ============================================ */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Hover lift effect */
.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

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

/* Text Colors */
.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-tertiary { color: var(--text-tertiary) !important; }
.text-muted { color: var(--text-tertiary) !important; }

/* Background Colors */
.bg-primary { background: var(--bg-primary) !important; }
.bg-secondary { background: var(--bg-secondary) !important; }
.bg-tertiary { background: var(--bg-tertiary) !important; }

/* Borders */
.border { border: 1px solid var(--border-color) !important; }
.border-top { border-top: 1px solid var(--border-color) !important; }
.border-bottom { border-bottom: 1px solid var(--border-color) !important; }

/* Shadows */
.shadow-sm { box-shadow: var(--card-shadow) !important; }
.shadow { box-shadow: var(--card-shadow-hover) !important; }

/* Spacing */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }

/* ============================================
   THEME TOGGLE BUTTON
   ============================================ */

.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--hover-overlay);
    transform: scale(1.05);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    /* Tablet styles */
    .container {
        max-width: 100%;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero-section {
        padding: 3rem 0;
    }

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

    .btn-hero,
    .btn-hero-outline {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }
}

@media (max-width: 768px) {
    /* Mobile styles */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }

    /* Improved button handling - touch-friendly but not full width */
    .btn {
        min-height: 44px; /* Touch target accessibility */
        padding: 0.75rem 1.25rem;
        font-size: 0.875rem;
        width: auto;
        justify-content: center;
    }

    .btn-sm {
        min-height: 40px;
        padding: 0.5rem 1rem;
    }

    .btn-lg {
        min-height: 48px;
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    /* Stack buttons in groups on mobile */
    .d-flex.gap-2,
    .d-flex.gap-3 {
        flex-direction: column;
        gap: 0.5rem !important;
    }

    .d-flex.gap-2 .btn,
    .d-flex.gap-3 .btn {
        width: 100%;
    }

    /* Hero section mobile */
    .hero-section {
        padding: 2rem 0;
    }

    .hero-heading {
        font-size: 2rem;
    }

    .hero-lead {
        font-size: 1rem;
    }

    /* Service cards */
    .service-card {
        margin-bottom: 1rem;
    }

    /* Navigation */
    .navbar {
        padding: 0.5rem 0;
    }

    .navbar-brand {
        font-size: 1.25rem;
    }

    .navbar-brand img {
        height: 32px;
        width: 32px;
    }

    /* Forms */
    .form-control,
    .form-select {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }

    .form-label {
        font-size: 0.875rem;
        margin-bottom: 0.5rem;
    }

    /* Cards */
    .card {
        margin-bottom: 1rem;
    }

    .card-body {
        padding: 1rem;
    }

    .card-header,
    .card-footer {
        padding: 0.75rem 1rem;
    }

    /* Stats grid */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    /* Modal */
    .modal-dialog {
        margin: 0.5rem;
    }

    .modal-content {
        border-radius: 8px;
    }

    .modal-body {
        padding: 1rem;
    }

    /* Tables */
    .table th,
    .table td {
        padding: 0.5rem;
        font-size: 0.875rem;
    }

    /* Badges */
    .badge {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }

    /* Theme toggle */
    .theme-toggle {
        width: 36px;
        height: 36px;
    }
}

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

    .hero-section {
        padding: 1.5rem 0;
    }

    .hero-heading {
        font-size: 1.75rem;
    }

    .hero-lead {
        font-size: 0.875rem;
    }

    .btn-hero,
    .btn-hero-outline {
        padding: 0.75rem 1.25rem;
        font-size: 0.875rem;
        min-height: 44px;
    }

    /* Single column stats */
    .stats-grid {
        grid-template-columns: 1fr;
    }

    /* Typography adjustments */
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    h4 { font-size: 1.125rem; }

    /* Better spacing */
    .mb-4 { margin-bottom: 0.75rem !important; }
    .mb-5 { margin-bottom: 1rem !important; }
    .p-4 { padding: 0.75rem !important; }

    /* Form elements */
    .form-control,
    .form-select {
        font-size: 1rem;
        padding: 0.75rem;
    }

    .form-label {
        font-size: 0.8125rem;
        margin-bottom: 0.375rem;
    }

    /* Table improvements */
    .table th,
    .table td {
        padding: 0.375rem;
        font-size: 0.8125rem;
    }

    /* Badge adjustments */
    .badge {
        font-size: 0.6875rem;
        padding: 0.1875rem 0.375rem;
    }

    /* Cards */
    .card-body {
        padding: 0.75rem;
    }

    .card-header,
    .card-footer {
        padding: 0.625rem 0.75rem;
    }

    /* Navbar */
    .navbar-brand {
        font-size: 1.125rem;
    }

    .navbar-brand img {
        height: 28px;
        width: 28px;
    }

    /* Theme toggle */
    .theme-toggle {
        width: 32px;
        height: 32px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .navbar,
    .theme-toggle,
    .btn,
    .floating-cta {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }
}