/* --- Guven Denetim Corporate CSS --- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700&family=Playfair+Display:wght@700&display=swap');

:root {
    --bg-dark: #1e293b; /* Slate Blue */
    --bg-card: #ffffff;
    --primary-green: #10b981; /* Success Green */
    --hover-green: #059669;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border-color: #cbd5e1;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: #f8fafc;
    color: var(--text-dark);
    line-height: 1.6;
}

.brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bg-dark);
    text-decoration: none;
}

.brand span {
    color: var(--primary-green);
}

header {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

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

nav ul {
    display: flex;
    gap: 30px;
    list-style: none;
}

nav a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 0.3s;
}

nav a:hover, nav a.active {
    color: var(--primary-green);
}

/* Hero */
.hero {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(rgba(30, 41, 59, 0.9), rgba(30, 41, 59, 0.95)), url('https://images.unsplash.com/photo-1554224155-8d04cb21cd6c?auto=format&fit=crop&w=1200');
    background-size: cover;
    background-position: center;
    color: #fff;
}

.hero h1 {
    font-size: 3.2rem;
    color: #fff;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.15rem;
    color: #cbd5e1;
    max-width: 600px;
    margin: 0 auto 30px;
}

.btn-green {
    display: inline-block;
    padding: 12px 32px;
    background: var(--primary-green);
    color: #fff;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    font-size: 0.9rem;
}

.btn-green:hover {
    background: var(--hover-green);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
}

/* Grid & Tables */
.services-section {
    padding: 80px 0;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 35px 25px;
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.02);
    border-color: var(--primary-green);
}

.service-icon {
    font-size: 2.2rem;
    color: var(--primary-green);
    margin-bottom: 15px;
}

.service-card h3 {
    margin-bottom: 10px;
}

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

/* Table deadlines */
.deadline-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.deadline-table th, .deadline-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.deadline-table th {
    background: var(--bg-dark);
    color: #fff;
}

/* Calc Box */
.calc-section {
    padding: 80px 0;
}

.calc-box {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-input, .form-select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
}

.form-input:focus, .form-select:focus {
    border-color: var(--primary-green);
    outline: none;
}

.calc-output-box {
    background: #f8fafc;
    border: 1px dashed var(--primary-green);
    padding: 20px;
    margin-top: 25px;
    border-radius: 6px;
}

.output-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    margin-bottom: 8px;
}

footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 40px 0;
    text-align: center;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .nav-flex {
        flex-direction: column;
        gap: 15px;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
}