/**
 * Global CSS for Resume Builder
 * Fully Responsive, Mobile-First
 */

/* =========================================
   1. Variables & Reset
   ========================================= */
:root {
    --primary-color: #2563eb;       /* Professional Blue */
    --primary-hover: #1d4ed8;
    --secondary-color: #475569;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --danger: #ef4444;
    --success: #22c55e;
    --radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

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

/* =========================================
   2. Layout & Grid System
   ========================================= */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.main-content {
    flex: 1;
    padding: 40px 0;
}

/* Responsive Grid */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: -10px;
}

.col-12, .col-6, .col-4 {
    padding: 10px;
    width: 100%;
}

@media (min-width: 768px) {
    .col-6 { width: 50%; }
    .col-4 { width: 33.333%; }
}

/* =========================================
   3. Navbar (Header)
   ========================================= */
.navbar {
    background-color: var(--card-bg);
    box-shadow: var(--shadow-sm);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: var(--secondary-color);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Mobile Menu Toggle (Hidden on desktop) */
.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* Add JS later to toggle this */
        flex-direction: column;
        width: 100%;
        background: var(--card-bg);
        position: absolute;
        top: 60px;
        left: 0;
        padding: 20px;
        box-shadow: var(--shadow-md);
    }
    .nav-links.active { display: flex; }
    .menu-toggle { display: block; }
}

/* =========================================
   4. UI Components (Cards, Buttons, Forms)
   ========================================= */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 25px;
    border: 1px solid var(--border-color);
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-align: center;
    transition: var(--transition);
}

.btn-primary { background: var(--primary-color); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }

/* Forms */
.form-group { margin-bottom: 15px; }
.form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--secondary-color);
}
.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Alerts for Flash Messages */
.alert {
    padding: 15px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-weight: 500;
}
.alert-success { background: #dcfce7; color: #166534; }
.alert-danger { background: #fee2e2; color: #991b1b; }

/* =========================================
   5. Footer
   ========================================= */
.footer {
    background-color: var(--card-bg);
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}