/* Google Fonts - Modern 'Poppins' Font */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* ==========================================
   1. CSS Variables (Light Mode - Default)
   ========================================== */
:root {
    --primary-color: #10b981; /* Modern Emerald Green */
    --primary-hover: #059669;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius-lg: 16px;
    --radius-md: 10px;
}

/* ==========================================
   2. Dark Mode Variables (2050 Look)
   ========================================== */
body.dark-mode {
    --primary-color: #10b981; /* Keep Green for Brand */
    --bg-color: #111827; /* Deep Dark Background */
    --card-bg: #1f2937; /* Dark Card Background */
    --text-main: #f9fafb;
    --text-muted: #9ca3af;
    --border-color: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0, 0.5);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0, 0.5);
}

/* ==========================================
   3. Global Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

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

/* ==========================================
   4. Modern Components (Cards & Buttons)
   ========================================== */
.modern-card {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.modern-card:hover {
    transform: translateY(-5px);
}

.btn-modern {
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(16, 185, 129, 0.3);
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-modern:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 8px rgba(16, 185, 129, 0.4);
    color: #ffffff;
}

.text-muted-custom {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Top Navigation Bar */
.top-navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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