/* ============================================
   ThinkTally Books - Professional CSS
   Color Scheme: Navy Blue, White, Gold/Green
   ============================================ */

:root {
    --primary-navy: #2d3e2d;
    --secondary-navy: #1a5f1a;
    --accent-gold: #C5AA6A;
    --accent-green: #31622A;
    --button-color: #31622A;
    --text-dark: #1f1f1f;
    --text-light: #5a5a5a;
    --bg-light: #f5f4f1;
    --bg-white: #ffffff;
    --border-color: #e8e6e1;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Open Sans', 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--primary-navy);
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
}

h2 {
    font-size: 2.5rem;
    margin-top: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
}

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

a:hover {
    color: var(--accent-gold);
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    background: linear-gradient(135deg, #C5AA6A 0%, #d4b87d 100%);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scroll {
    background: linear-gradient(135deg, #C5AA6A 0%, #b89a54 100%);
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 800;
    color: #ffffff;
    transition: color 0.3s ease;
}

.navbar.scroll .nav-brand {
    color: #ffffff;
}

.nav-brand i {
    font-size: 2rem;
    color: #ffffff;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
}

.navbar.scroll .nav-menu a {
    color: #ffffff;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #f0f0f0;
    border-bottom-color: #f0f0f0;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    background: none;
    border: none;
    gap: 6px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background-color: #ffffff;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.navbar.scroll .hamburger span {
    background-color: #ffffff;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 30px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background-color: #31622A;
    color: var(--bg-white);
}

.btn-primary:hover {
    background-color: #264620;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: #31622A;
    color: var(--bg-white);
}

.btn-secondary:hover {
    background-color: #264620;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-accent {
    background-color: #31622A;
    color: var(--bg-white);
}

.btn-accent:hover {
    background-color: #264620;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: #31622A;
    border: 2px solid #31622A;
}

.btn-outline:hover {
    background-color: #31622A;
    color: var(--bg-white);
}

.btn-lg {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    background: linear-gradient(135deg, #31622A 0%, #1a3a15 100%);
    color: var(--bg-white);
    padding: 100px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="rgba(255,255,255,0.05)"/></svg>');
    opacity: 0.1;
    z-index: 0;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: var(--bg-white);
    margin-bottom: 1rem;
    font-size: 3rem;
}

.hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-buttons .btn {
    font-size: 1.05rem;
}

/* ============================================
   SECTION HEADER
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    position: relative;
    display: inline-block;
    padding-bottom: 1rem;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #C5AA6A, #31622A);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 1rem auto 0;
}

/* ============================================
   SERVICES GRID
   ============================================ */

#services {
    padding: 80px 20px;
    background-color: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border-top: 4px solid #C5AA6A;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-card-icon {
    font-size: 3rem;
    color: #31622A;
    margin-bottom: 1rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.service-card .btn {
    width: 100%;
    justify-content: center;
}

/* ============================================
   WHY CHOOSE US SECTION
   ============================================ */

#why-choose {
    padding: 80px 20px;
    background-color: var(--bg-white);
}

.why-choose-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.why-choose-item {
    padding: 2rem;
    background: linear-gradient(135deg, rgba(49, 98, 42, 0.05), rgba(197, 170, 106, 0.05));
    border-left: 4px solid #31622A;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.why-choose-item:hover {
    box-shadow: var(--shadow-sm);
    transform: translateX(5px);
}

.why-choose-item i {
    font-size: 2rem;
    color: #C5AA6A;
    margin-bottom: 1rem;
}

.why-choose-item h4 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.why-choose-item p {
    font-size: 0.95rem;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

#contact {
    padding: 80px 20px;
    background-color: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.contact-info {
    padding: 2rem;
}

.contact-info h2 {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.5rem;
    color: #C5AA6A;
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.contact-item-content h4 {
    margin-bottom: 0.5rem;
}

.contact-item-content p {
    margin: 0;
    font-size: 0.95rem;
}

.contact-form {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
}

.contact-form h3 {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #31622A;
    box-shadow: 0 0 0 3px rgba(49, 98, 42, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group button {
    width: 100%;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background-color: #2d3e2d;
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 20px 40px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    color: var(--bg-white);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #C5AA6A;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
    font-weight: 800;
    color: #C5AA6A;
    font-size: 1.2rem;
}

.partner-logos {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.partner-logos img {
    height: 40px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.partner-logos img:hover {
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

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

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    h3 {
        font-size: 1.3rem;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: #1a5f1a;
        gap: 0;
        padding: 1rem 0;
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        color: var(--bg-white);
        padding: 1rem 2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        border-bottom-color: transparent;
    }

    .nav-menu a:hover,
    .nav-menu a.active {
        background-color: #264620;
        border-bottom-color: #C5AA6A;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding: 60px 20px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .why-choose-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    .container {
        padding: 0 15px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.slide-in-left {
    animation: slideInLeft 0.6s ease-out forwards;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 2rem;
}

.mb-4 {
    margin-bottom: 2rem;
}

.text-muted {
    color: var(--text-light);
}

.text-gold {
    color: #C5AA6A;
}

.text-green {
    color: #31622A;
}

.bg-primary {
    background-color: #31622A;
    color: var(--bg-white);
}

.bg-light {
    background-color: var(--bg-light);
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in-down {
    animation: fadeInDown 0.3s ease-out forwards;
}