/* Modern Minimal Theme */
:root {
    --bg-main: #FFFFFF;
    --bg-secondary: #FAFAFA;
    --green-soft: #E8F5E9;
    --green-main: #2E7D32;
    --green-dark: #1B5E20;
    --text-dark: #1F2937;
    --text-gray: #6B7280;
    --border-light: #E5E7EB;
    
    --font-sans: 'Outfit', sans-serif;
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-dark);
    background:
        linear-gradient(rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.9)),
        url('assets/bg.png') center/cover fixed no-repeat;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}
.container-sm { max-width: 700px; }

/* Utilities */
.text-center { text-align: center; }
.text-green { color: var(--green-main); }
.text-gray { color: var(--text-gray); }
.font-medium { font-weight: 500; }
.text-lg { font-size: 1.25rem; }
.text-2xl { font-size: 2rem; }
.text-sm { font-size: 0.875rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.block { display: block; }
.flex { display: flex; }
.gap-2 { gap: 0.5rem; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.hidden { display: none !important; }

/* Entrance */
.entrance-screen {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background:
        linear-gradient(rgba(255, 255, 255, 0.74), rgba(255, 255, 255, 0.82)),
        url('assets/bg.png') center/cover no-repeat;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 50;
    transition: transform 0.8s cubic-bezier(0.85, 0, 0.15, 1), opacity 0.8s;
}

.entrance-inner {
    position: relative;
    width: 120px; height: 120px;
    display: flex; justify-content: center; align-items: center;
    margin-bottom: 30px;
}

.loading-ring {
    position: absolute;
    width: 100%; height: 100%;
    border: 2px solid var(--green-soft);
    border-top-color: var(--green-main);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.entrance-logo {
    width: 60px;
    font-weight: 600;
    font-size: 1.2rem;
    text-align: center;
}

.btn-start {
    background: var(--text-dark);
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 30px;
    font-family: inherit;
    font-size: 0.9rem;
    cursor: pointer;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s;
}

.btn-start.show {
    opacity: 1;
    transform: translateY(0);
}

.btn-start:hover {
    background: var(--green-main);
    transform: translateY(-2px);
}

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

/* Main Content */
#main-content {
    opacity: 0;
    transition: opacity 0.5s ease 0.3s;
}
#main-content.visible { opacity: 1; }

/* Hero */
.hero-section {
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding: 0 20px;
}

.nav-brand {
    position: absolute;
    top: 40px;
    left: 40px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.logo-img { height: 24px; }

.subtle-badge {
    background: var(--green-soft);
    color: var(--green-dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
    display: inline-block;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
    max-width: 500px;
    margin: 0 auto;
}

.scroll-down {
    position: absolute;
    bottom: 40px;
    font-size: 1.2rem;
    color: var(--text-gray);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* Background Shapes */
.bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    z-index: -1;
}
.shape-1 {
    width: 300px; height: 300px;
    background: var(--green-soft);
    top: -50px; right: -50px;
}
.shape-2 {
    width: 200px; height: 200px;
    background: #F3F4F6;
    bottom: 100px; left: -50px;
}

/* Common Reveal Animation */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.8s ease forwards;
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { animation-delay: 0.1s; transition-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; transition-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; transition-delay: 0.3s; }

@keyframes slideUp {
    to { opacity: 1; transform: translateY(0); }
}

/* Message Section */
.message-section {
    padding: 80px 0;
    background: var(--bg-main);
}

.clean-card {
    background: var(--bg-main);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02), 0 2px 4px -1px rgba(0,0,0,0.01);
    transition: box-shadow 0.3s ease;
}

.clean-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.025);
}

.main-msg {
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: -0.5px;
    line-height: 1.4;
    color: var(--text-dark);
}

/* Values Section */
.values-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.header-text h2 {
    font-size: 2rem;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.header-text p { color: var(--text-gray); }

.modern-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.grid-card {
    background: var(--bg-main);
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--border-light);
    transition: transform 0.3s ease, border-color 0.3s;
}

.grid-card:hover {
    transform: translateY(-4px);
    border-color: var(--green-main);
}

.icon-box {
    width: 48px; height: 48px;
    background: var(--green-soft);
    color: var(--green-main);
    border-radius: 10px;
    display: flex; justify-content: center; align-items: center;
    font-size: 1.25rem;
    margin-bottom: 20px;
}

.grid-card h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.grid-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* Bottom Section */
.bottom-section {
    padding: 80px 0;
}

.response-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

/* Buttons */
.action-buttons {
    display: flex; gap: 12px; justify-content: center;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-family: inherit;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--text-dark);
    color: white;
    border: 1px solid var(--text-dark);
}
.btn-primary:hover {
    background: var(--green-main);
    border-color: var(--green-main);
}

.btn-secondary {
    background: white;
    color: var(--text-dark);
    border: 1px solid var(--border-light);
}
.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: #D1D5DB;
}

.btn-text {
    background: none; border: none; color: var(--text-gray);
}
.btn-text:hover { color: var(--text-dark); }

.btn-sm { padding: 8px 16px; font-size: 0.85rem; }

/* Form */
.reply-form {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: 12px;
    text-align: left;
    border: 1px solid var(--border-light);
}

.form-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    margin-bottom: 12px;
    font-family: inherit;
    transition: border-color 0.2s;
}
.form-input:focus {
    outline: none;
    border-color: var(--text-dark);
}

/* Footer */
.minimal-footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-light);
    font-size: 0.9rem;
    color: var(--text-gray);
}

.footer-left h4 {
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 4px;
}

.footer-right {
    display: flex; gap: 20px;
}

.footer-right a {
    color: var(--text-gray);
    text-decoration: none;
    transition: color 0.2s;
}
.footer-right a:hover { color: var(--text-dark); }

@media (max-width: 600px) {
    .nav-brand { left: 20px; top: 20px; }
    .items-center-mobile { flex-direction: column; text-align: center; gap: 20px; }
}