/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    overflow-x: hidden;
    background: #f0f2f5;
    color: #1f2937;
    line-height: 1.6;
}

/* Navbar */
.navbar-landing {
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-landing .navbar-brand {
    font-weight: 800;
    font-size: 1.3rem;
    color: #1f2937;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.navbar-landing .navbar-brand i {
    color: #10b981;
    font-size: 1.4rem;
}

.navbar-landing .brand-accent {
    color: #10b981;
}

.navbar-landing .navbar-school-name {
    font-size: 0.85rem;
    color: #6b7280;
    margin-left: 0.75rem;
    padding-left: 0.75rem;
    border-left: 1px solid #e5e7eb;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
}

.btn-nav-login {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white !important;
    padding: 0.55rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}

.btn-nav-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.35);
    color: white;
}

/* Hero Section */
.hero-section {
    padding: 60px 0 50px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.hero-content {
    max-width: 520px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    color: #059669;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.35rem 0.85rem;
    border-radius: 50px;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: #111827;
    letter-spacing: -0.03em;
}

.hero-title .highlight {
    background: linear-gradient(135deg, #10b981, #059669);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #6b7280;
    margin-bottom: 1.75rem;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 0.85rem 2rem;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.35);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
    color: white;
}

/* Dashboard Mockup */
.hero-visual {
    position: relative;
}

.dashboard-mockup {
    background: #1e293b;
    border-radius: 16px;
    padding: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.dashboard-mockup::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #10b981, #34d399, #10b981);
}

/* Mockup Header */
.mockup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    background: #0f172a;
    border-radius: 10px 10px 0 0;
    margin: -1rem -1rem 1rem -1rem;
}

.mockup-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    font-weight: 700;
    font-size: 0.85rem;
}

.mockup-logo i {
    color: #10b981;
}

.mockup-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #94a3b8;
    font-size: 0.8rem;
}

.mockup-user .avatar {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: linear-gradient(135deg, #10b981, #059669);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
}

/* Mockup Content */
.mockup-content {
    display: flex;
    gap: 0.75rem;
}

/* Mockup Sidebar */
.mockup-sidebar {
    width: 140px;
    flex-shrink: 0;
}

.mockup-menu-item {
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    margin-bottom: 0.35rem;
    font-size: 0.7rem;
    color: #94a3b8;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.mockup-menu-item.active {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.mockup-menu-item i {
    width: 14px;
    font-size: 0.75rem;
}

/* Mockup Main */
.mockup-main {
    flex: 1;
    background: #f8fafc;
    border-radius: 10px;
    padding: 1rem;
    min-height: 200px;
}

.mockup-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.75rem;
}

/* Mockup Stats */
.mockup-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.mockup-stat {
    background: white;
    border-radius: 8px;
    padding: 0.6rem;
    text-align: center;
    border: 1px solid #e2e8f0;
}

.mockup-stat-value {
    font-size: 1.1rem;
    font-weight: 800;
    color: #10b981;
}

.mockup-stat-label {
    font-size: 0.55rem;
    color: #64748b;
    text-transform: uppercase;
}

/* Mockup Progress */
.mockup-progress {
    background: white;
    border-radius: 8px;
    padding: 0.75rem;
    border: 1px solid #e2e8f0;
}

.mockup-progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    margin-bottom: 0.5rem;
}

.mockup-progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}

.mockup-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #10b981, #34d399);
    width: 75%;
    border-radius: 4px;
}

/* Features Section */
.features-section {
    padding: 60px 0;
    background: #ffffff;
}

.features-section .section-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: #111827;
    margin-bottom: 2.5rem;
    text-align: center;
    letter-spacing: -0.02em;
}

.feature-item {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    padding: 1.5rem;
    background: white;
    border-radius: 14px;
    border: 1px solid #f3f4f6;
    transition: all 0.3s ease;
    height: 100%;
}

.feature-item:hover {
    border-color: #10b981;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
    transform: translateY(-3px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.feature-icon.green {
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    color: #10b981;
}

.feature-icon.blue {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    color: #3b82f6;
}

.feature-icon.amber {
    background: linear-gradient(135deg, #fffbeb, #fef3c7);
    color: #f59e0b;
}

.feature-icon.purple {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe);
    color: #8b5cf6;
}

.feature-icon.red {
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    color: #ef4444;
}

.feature-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.35rem;
}

.feature-content p {
    font-size: 0.85rem;
    color: #6b7280;
    margin: 0;
    line-height: 1.5;
}

/* How to Use Section */
.howto-section {
    padding: 60px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #f0f2f5 100%);
}

.howto-section .section-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: #111827;
    margin-bottom: 2rem;
    text-align: center;
    letter-spacing: -0.02em;
}

.step-card {
    background: white;
    border-radius: 16px;
    padding: 1.75rem;
    text-align: center;
    border: 1px solid #f3f4f6;
    transition: all 0.3s ease;
    height: 100%;
    position: relative;
}

.step-card:hover {
    border-color: #10b981;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-3px);
}

.step-number {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, #10b981, #059669);
    border-radius: 50%;
    color: white;
    font-weight: 800;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}

.step-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #10b981;
    margin: 0 auto 1rem;
}

.step-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.step-card p {
    font-size: 0.85rem;
    color: #6b7280;
    margin: 0;
    line-height: 1.5;
}

/* Footer */
footer {
    background: #1e293b;
    padding: 50px 0 1.5rem;
    color: white;
    text-align: center;
}

footer .container {
    max-width: 600px;
}

.footer-brand {
    font-weight: 800;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: white;
}

footer .footer-brand i {
    color: #10b981;
}

footer .footer-brand .accent {
    color: #10b981;
}

footer .footer-desc {
    color: #94a3b8;
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-copyright {
    color: #64748b;
    font-size: 0.8rem;
    margin-bottom: 0.35rem;
}

.footer-tagline {
    color: #475569;
    font-size: 0.75rem;
    font-style: italic;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2rem;
        text-align: center;
    }
    
    .hero-subtitle {
        text-align: center;
    }
    
    .hero-cta {
        display: flex;
        justify-content: center;
    }
    
    .hero-content {
        max-width: 100%;
        text-align: center;
        margin-bottom: 2rem;
    }
    
    .mockup-sidebar {
        display: none;
    }
    
    .mockup-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 40px 0 30px;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .mockup-content {
        flex-direction: column;
    }
}