/* ========================================
   TITIK KUMPUL INDONESIA - LANDING PAGE
   Single Page - Hero Only
   ======================================== */

/* ==================== ROOT VARIABLES ==================== */
:root {
    --primary-orange: #F5A623;
    --travel-orange: #E85D04;
    --travel-gradient: linear-gradient(135deg, #FF8C00, #E85D04, #FF6B35);
    --panasdingin-orange: #E85D04;
    --panasdingin-blue: #00A8E8;
    --panasdingin-gradient: linear-gradient(135deg, #E85D04, #00A8E8);
    --dark: #1A1A2E;
    --darker: #0F0F1A;
    --light: #FFFFFF;
    --gray: #6C757D;
    
    --font-primary: 'Poppins', sans-serif;
    --font-display: 'Playfair Display', serif;
    
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease;
}

/* ==================== RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--darker);
    color: var(--light);
    overflow-x: hidden;
    line-height: 1.7;
}

::selection {
    background: var(--primary-orange);
    color: var(--dark);
}

/* ==================== PRELOADER ==================== */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--darker);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    position: relative;
    width: 150px;
    height: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loader-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-radius: 50%;
    animation: loaderSpin 1.5s linear infinite;
}

.loader-ring:nth-child(1) {
    border-top-color: var(--primary-orange);
    animation-delay: 0s;
}

.loader-ring:nth-child(2) {
    width: 80%;
    height: 80%;
    border-right-color: var(--travel-orange);
    animation-delay: 0.1s;
    animation-direction: reverse;
}

.loader-ring:nth-child(3) {
    width: 60%;
    height: 60%;
    border-bottom-color: var(--panasdingin-blue);
    animation-delay: 0.2s;
}

.loader-text {
    font-size: 12px;
    color: var(--primary-orange);
    text-transform: uppercase;
    letter-spacing: 2px;
}

@keyframes loaderSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==================== PARTICLE BACKGROUND ==================== */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 50%, #16213E 100%);
}

/* ==================== HERO SECTION ==================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 50px 0;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(245, 166, 35, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(0, 168, 232, 0.05) 0%, transparent 50%);
    animation: gradientMove 15s ease-in-out infinite;
}

@keyframes gradientMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(5%, 5%) rotate(5deg); }
    50% { transform: translate(0, 10%) rotate(0deg); }
    75% { transform: translate(-5%, 5%) rotate(-5deg); }
}

/* Logo Container */
.logo-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.donut-logo {
    position: relative;
    animation: floatAnimation 6s ease-in-out infinite;
}

.main-logo {
    max-width: 350px;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(245, 166, 35, 0.3));
    transition: var(--transition-medium);
}

.main-logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 30px 60px rgba(245, 166, 35, 0.5));
}

@keyframes floatAnimation {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Floating Particles */
.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-orange);
    animation: particleFloat 4s ease-in-out infinite;
}

.particle-1 { top: 10%; left: 10%; animation-delay: 0s; }
.particle-2 { top: 20%; right: 15%; animation-delay: 0.5s; background: var(--panasdingin-blue); }
.particle-3 { bottom: 30%; left: 5%; animation-delay: 1s; }
.particle-4 { bottom: 20%; right: 10%; animation-delay: 1.5s; background: var(--travel-orange); }
.particle-5 { top: 50%; left: 0%; animation-delay: 2s; }

@keyframes particleFloat {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.6; }
    50% { transform: translate(20px, -20px) scale(1.2); opacity: 1; }
}

/* Vertical Divider */
.vertical-divider {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    height: 60%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.divider-line {
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, 
        transparent, 
        var(--primary-orange) 20%, 
        var(--primary-orange) 80%, 
        transparent);
    position: relative;
}

.divider-glow {
    position: absolute;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, 
        transparent, 
        rgba(245, 166, 35, 0.5) 50%, 
        transparent);
    filter: blur(10px);
    animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* Buttons Container */
.buttons-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
}

.btn-spacer {
    height: 20px;
}

/* Service Buttons */
.service-btn {
    position: relative;
    display: block;
    width: 280px;
    padding: 25px 40px;
    border-radius: 20px;
    text-decoration: none;
    overflow: hidden;
    transition: var(--transition-medium);
    cursor: pointer;
}

.travel-btn {
    background: linear-gradient(135deg, rgba(232, 93, 4, 0.1), rgba(255, 140, 0, 0.1));
    border: 2px solid rgba(232, 93, 4, 0.3);
}

.panasdingin-btn {
    background: linear-gradient(135deg, rgba(232, 93, 4, 0.1), rgba(0, 168, 232, 0.1));
    border: 2px solid rgba(0, 168, 232, 0.3);
}

.btn-content {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-logo img {
    max-width: 180px;
    height: auto;
    transition: var(--transition-medium);
}

.btn-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 20px;
    opacity: 0;
    transition: var(--transition-medium);
}

.travel-glow {
    background: radial-gradient(circle, rgba(232, 93, 4, 0.4), transparent 70%);
}

.panasdingin-glow {
    background: radial-gradient(circle, rgba(0, 168, 232, 0.4), transparent 70%);
}

.btn-hover-effect {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-medium);
}

.service-btn:hover {
    transform: translateY(-10px) scale(1.02);
}

.travel-btn:hover {
    border-color: var(--travel-orange);
    box-shadow: 0 20px 50px rgba(232, 93, 4, 0.3);
}

.panasdingin-btn:hover {
    border-color: var(--panasdingin-blue);
    box-shadow: 0 20px 50px rgba(0, 168, 232, 0.3);
}

.service-btn:hover .btn-glow {
    opacity: 1;
}

.service-btn:hover .btn-hover-effect {
    left: 100%;
}

.service-btn:hover .btn-logo img {
    transform: scale(1.1);
}

/* Footer Credit */
.footer-credit {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.footer-credit p {
    color: var(--gray);
    font-size: 12px;
    margin: 0;
    letter-spacing: 1px;
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 1199.98px) {
    .main-logo {
        max-width: 300px;
    }
    
    .service-btn {
        width: 250px;
    }
}

@media (max-width: 991.98px) {
    .hero-section {
        padding: 80px 0 60px;
    }
    
    .logo-container {
        margin-bottom: 60px;
    }
    
    .main-logo {
        max-width: 250px;
    }
    
    .vertical-divider {
        display: none;
    }
    
    .buttons-container {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .btn-spacer {
        display: none;
    }
}

@media (max-width: 767.98px) {
    .hero-section {
        min-height: 100vh;
        padding: 60px 0 80px;
    }
    
    .main-logo {
        max-width: 200px;
    }
    
    .buttons-container {
        flex-direction: column;
        gap: 25px;
    }
    
    .service-btn {
        width: 100%;
        max-width: 260px;
        padding: 20px 30px;
    }
    
    .btn-logo img {
        max-width: 150px;
    }
    
    .footer-credit {
        bottom: 20px;
    }
    
    .footer-credit p {
        font-size: 10px;
    }
}

@media (max-width: 575.98px) {
    .main-logo {
        max-width: 180px;
    }
    
    .service-btn {
        max-width: 240px;
        padding: 18px 25px;
    }
    
    .btn-logo img {
        max-width: 130px;
    }
}

/* ==================== ANIMATIONS ==================== */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shine {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Smooth scrolling for all browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-orange: #FF9500;
        --travel-orange: #FF6B00;
        --panasdingin-blue: #00B4FF;
    }
}