/* ================================
   SUTAN - PROFESSIONAL WEBSITE
   Navy & Gold Theme
================================ */

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

:root {
    --navy: #1e40af;
    --navy-dark: #1e3a8a;
    --gold: #f59e0b;
    --gold-light: #fbbf24;
    --dark: #0f172a;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-900: #111827;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--gray-900);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    color: var(--navy);
}

.logo i {
    font-size: 28px;
}

.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
    list-style: none;
}

.nav-menu a {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--navy);
}

.btn-header {
    background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
    color: var(--dark) !important;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-header:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
}

/* Hero */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--dark) 100%);
    color: white;
}

.hero-content {
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--gold-light);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 52px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
}

.highlight {
    background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 20px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
    color: var(--dark);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(245, 158, 11, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-white {
    background: white;
    color: var(--navy);
}

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(255,255,255,0.3);
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    max-width: 700px;
}

.stat-number {
    font-size: 48px;
    font-weight: 900;
    color: white;
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
}

/* Sections */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.tag {
    display: inline-block;
    background: var(--navy);
    color: white;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.tag.light {
    background: var(--gold);
    color: var(--dark);
}

.section-header h2 {
    font-size: 44px;
    font-weight: 900;
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-header p {
    font-size: 20px;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.integration .section-header h2,
.integration .section-header p {
    color: white;
}

.integration .section-header p {
    color: rgba(255, 255, 255, 0.9);
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature {
    background: var(--gray-50);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--gray-100);
    transition: all 0.3s;
}

.feature:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
    border-color: var(--gold);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
}

.feature h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* ERP Integration */
.integration {
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--dark) 100%);
    color: white;
}

.erp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.erp-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 32px 24px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s;
}

.erp-card:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--gold);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
}

.erp-card i {
    font-size: 40px;
    color: var(--gold-light);
    margin-bottom: 16px;
}

.erp-card h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.erp-card p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

/* CTA */
.cta {
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--dark) 100%);
    color: white;
    text-align: center;
}

.cta h2 {
    font-size: 44px;
    font-weight: 900;
    margin-bottom: 20px;
}

.cta p {
    font-size: 20px;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.9);
}

/* Contact */
.contact {
    background: var(--dark);
    color: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
}

.contact-method i {
    font-size: 28px;
    color: var(--gold-light);
}

.contact-method h4 {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 4px;
}

.contact-method a,
.contact-method span {
    font-size: 18px;
    font-weight: 600;
    color: white;
    text-decoration: none;
}

.contact-method a:hover {
    color: var(--gold);
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: white;
    font-family: inherit;
    font-size: 15px;
    margin-bottom: 16px;
    transition: all 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--gold);
    background: rgba(255, 255, 255, 0.12);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.btn-submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
    color: var(--dark);
    padding: 16px 32px;
    border: none;
    border-radius: 10px;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4);
}

/* Footer */
footer {
    background: #000;
    padding: 80px 0 0;
    color: rgba(255, 255, 255, 0.8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col h4 {
    color: white;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 24px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
}

.footer-logo i {
    font-size: 32px;
    color: var(--gold);
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s;
}

.footer-social a:hover {
    background: var(--gold);
    color: var(--dark);
    transform: translateY(-3px);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--gold);
    padding-left: 8px;
}

.footer-contact {
    list-style: none;
    padding: 0;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
    color: var(--gold);
    font-size: 18px;
    width: 20px;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-contact a:hover {
    color: var(--gold);
}

.footer-contact span {
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    padding: 32px 0;
    text-align: center;
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 8px;
}

.footer-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* Floating Buttons */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: #25d366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all 0.3s;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.back-to-top {
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 50px;
    height: 50px;
    background: var(--navy);
    color: white;
    border: none;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.4);
    z-index: 999;
    transition: all 0.3s;
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover {
    background: var(--gold);
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
}

/* Responsive */
@media (max-width: 1024px) {
    .features-grid,
    .erp-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .erp-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .section-header h2 {
        font-size: 32px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* ============================================================================
   LOGO BRANDING - APP STYLE (SuTan Gradient)
   ============================================================================ */

.logo-icon {
    font-size: 28px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.logo-text {
    display: inline-flex;
    align-items: baseline;
}

/* Default: White "Su" (for dark backgrounds like footer) */
.logo-su {
    color: #ffffff;
    font-weight: 700;
}

/* Amber Gradient "Tan" (works on both backgrounds) */
.logo-tan {
    /* Fallback solid color */
    color: #f59e0b;
    /* Gradient */
    background: linear-gradient(135deg, #fbbf24, #f59e0b, #d97706);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    -moz-background-clip: text;
    -moz-text-fill-color: transparent;
    font-weight: 800;
    background-size: 200% 200%;
    animation: gradient-shift 3s ease infinite;
    /* Force hardware acceleration */
    transform: translateZ(0);
    will-change: background-position;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Header logo - Navy "Su" for white background */
.header .logo-su {
    color: var(--navy);
}

.header .logo-icon {
    filter: drop-shadow(0 2px 4px rgba(30, 64, 175, 0.2));
}

/* Footer logo - White "Su" for dark background */
.footer-logo .logo-su {
    color: #ffffff;
}

.footer-logo .logo-icon {
    font-size: 26px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

@media (max-width: 768px) {
    .logo {
        font-size: 20px;
    }
    
    .logo-icon {
        font-size: 24px;
    }
}