/**
 * VectraHub Global Styles
 * 
 * This file contains only universal styles that apply to ALL pages:
 * - CSS Variables (design tokens)
 * - CSS Reset
 * - Base typography
 * - Navigation
 * - Buttons
 * - Forms
 * - Footer
 * - Utilities
 * - Animations
 * - Dark Mode base
 * 
 * Version: 1.0.0
 * Last updated: 2026-01-01
 */

/* =====================================================
   CSS VARIABLES (Design Tokens)
   ===================================================== */
:root {
    --primary-color: #1d1d1d;
    --accent-color: #00ffd1;
    --secondary-color: #ff6b6b;
    --background-color: #f9fafb;
    --text-color: #333333;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --card-shadow-hover: 0 8px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 0.75rem;
}

/* =====================================================
   CSS RESET
   ===================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* =====================================================
   BASE TYPOGRAPHY
   ===================================================== */
body {
    font-family: "Open Sans", sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: "Poppins", sans-serif;
    font-weight: 600;
    color: var(--text-color);
}

.text-accent {
    color: var(--accent-color) !important;
}

.text-secondary {
    color: var(--secondary-color) !important;
}

/* =====================================================
   NAVIGATION
   ===================================================== */
.navbar {
    background: rgba(29, 29, 29, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.5rem;
    font-family: "Poppins", sans-serif;
    color: white !important;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
}

.navbar-nav .nav-link:hover {
    color: var(--accent-color) !important;
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn-accent {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--primary-color);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border-radius: 0.375rem;
    box-shadow: 0 2px 4px rgba(0, 255, 209, 0.2);
    transition: all 0.3s ease;
}

.btn-accent:hover {
    background-color: #00e5bb;
    border-color: #00e5bb;
    color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 255, 209, 0.3);
}

.btn-outline-light {
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
}

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

.btn .spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

.btn {
    color: inherit;
}

.btn-accent {
    color: var(--primary-color) !important;
}

.btn-outline-light {
    color: white !important;
}

.btn-outline-light:hover {
    color: var(--primary-color) !important;
}

/* =====================================================
   FORMS
   ===================================================== */
.form-floating>.form-control {
    border: 2px solid #e9ecef;
    transition: border-color 0.3s ease;
    background-color: white;
    color: var(--text-color);
}

.form-floating>.form-control:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 255, 209, 0.25);
    background-color: white;
    color: var(--text-color);
}

.form-floating>label {
    color: #6c757d;
}

.form-floating>.form-control:focus~label,
.form-floating>.form-control:not(:placeholder-shown)~label {
    color: var(--accent-color);
}

/* =====================================================
   PROGRESS BARS
   ===================================================== */
.progress {
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    background-color: var(--accent-color);
}

/* =====================================================
   ALERTS
   ===================================================== */
.alert {
    border: none;
    border-radius: var(--border-radius);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: #065f46;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: #991b1b;
}

/* =====================================================
   FOOTER
   ===================================================== */
footer {
    margin-top: auto;
    padding: 2rem 0;
    background-color: var(--primary-color);
    color: rgba(255, 255, 255, 0.8);
}

footer a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

footer h5,
footer p {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* =====================================================
   CARDS (Shared)
   ===================================================== */
.feature-card,
.step-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 0.5rem;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover,
.step-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

.feature-card h3,
.feature-card h4,
.feature-card h5,
.feature-card p,
.step-card h3,
.step-card h4,
.step-card h5,
.step-card p {
    color: var(--accent-color);
}

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

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.5rem;
    margin: 0 auto 1rem;
}

/* =====================================================
   TOOLTIPS
   ===================================================== */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.8rem;
    pointer-events: none;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* =====================================================
   SECTION HEADERS
   ===================================================== */
.section-header {
    margin-bottom: 2rem;
}

.section-header h2 {
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.section-header p {
    color: #6c757d;
    margin: 0;
}

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

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.4s ease-out;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* Skeleton loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
    width: 100%;
}

.skeleton-text.sm {
    width: 60%;
}

.skeleton-image {
    height: 160px;
    width: 100%;
    margin-bottom: 1rem;
}

.skeleton-button {
    height: 2.5rem;
    width: 100%;
    margin-top: 0.5rem;
}

/* =====================================================
   RESPONSIVE (Global)
   ===================================================== */
@media (max-width: 767.98px) {
    .display-4 {
        font-size: 2rem;
    }

    .feature-icon {
        font-size: 2rem;
    }
}

/* =====================================================
   DARK MODE (Base)
   ===================================================== */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #121212;
        --text-color: #e0e0e0;
        --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
        --card-shadow-hover: 0 8px 15px rgba(0, 0, 0, 0.3);
    }

    body {
        background-color: var(--background-color);
        color: var(--text-color);
    }

    h1,
    h2,
    h3,
    h5,
    h6,
    p,
    span,
    div,
    label {
        color: var(--accent-color);
    }

    .feature-card,
    .step-card {
        background-color: #1e1e1e;
        border-color: #333;
        color: var(--text-color);
    }

    .form-control,
    .form-select {
        background-color: #2a2a2a;
        border-color: #444;
        color: #e0e0e0;
    }

    .form-control:focus,
    .form-select:focus {
        background-color: #2a2a2a;
        color: #e0e0e0;
        border-color: var(--accent-color);
    }

    .form-floating>label {
        color: #adb5bd !important;
    }

    .modal-content {
        background-color: #1e1e1e;
        border-color: #333;
        color: var(--text-color);
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        color: var(--text-color);
    }

    .modal-title {
        color: var(--text-color) !important;
    }

    .close {
        color: #e0e0e0;
    }

    .table {
        color: #e0e0e0;
    }

    .table-striped tbody tr:nth-of-type(odd) {
        background-color: rgba(255, 255, 255, 0.05);
    }

    .text-muted {
        color: #adb5bd !important;
    }

    .lead {
        color: var(--text-color) !important;
    }

    .btn-outline-secondary {
        color: var(--text-color);
        border-color: #444;
    }

    .btn-outline-secondary:hover {
        background-color: #444;
        color: var(--text-color);
    }

    .skeleton {
        background-color: #2a2a2a;
    }
}