/* ============================================================================
   RACKFY LANDING PAGE — Premium Dark Design
   ============================================================================ */

:root {
    --color-bg-primary: #020617;
    --color-bg-secondary: #0f172a;
    --color-border: #1e293b;
    --color-text-primary: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-accent: #84cc16;
    --color-accent-hover: #a3e635;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ---- Custom Scrollbar ---- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

/* ============================================================================
   HEADER
   ============================================================================ */
#landing-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(30, 41, 59, 0.5);
    transition: all 0.3s ease;
}

#landing-header.scrolled {
    background: rgba(2, 6, 23, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    text-decoration: none;
}

.logo-svg {
    height: 28px;
    width: auto;
}

.header-nav {
    display: flex;
    gap: 32px;
}

.header-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.25s ease;
}

.header-nav a:hover {
    color: var(--color-accent);
}

.cta-btn-sm {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    background: var(--color-accent);
    color: #020617;
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.25s ease;
}

.cta-btn-sm:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(132, 204, 22, 0.3);
}

/* ============================================================================
   HERO
   ============================================================================ */
#hero {
    position: relative;
    padding: 160px 0 100px;
    text-align: center;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(132, 204, 22, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(132, 204, 22, 0.1);
    border: 1px solid rgba(132, 204, 22, 0.2);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-accent) 0%, #22d3ee 50%, var(--color-accent) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        background-position: 0% center;
    }

    50% {
        background-position: 200% center;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    background: var(--color-accent);
    color: #020617;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(132, 204, 22, 0.3);
}

.cta-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(132, 204, 22, 0.4);
}

.cta-btn-lg {
    padding: 18px 40px;
    font-size: 1.125rem;
    border-radius: 14px;
}

.cta-btn-outline {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    background: transparent;
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    text-decoration: none;
    transition: all 0.3s ease;
}

.cta-btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(132, 204, 22, 0.05);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-accent);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ============================================================================
   SECTIONS
   ============================================================================ */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(132, 204, 22, 0.1);
    border: 1px solid rgba(132, 204, 22, 0.2);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 16px auto 0;
}

/* ============================================================================
   FEATURES
   ============================================================================ */
#features {
    border-top: 1px solid var(--color-border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(132, 204, 22, 0.2);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(132, 204, 22, 0.1);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================================================
   SERVICES
   ============================================================================ */
#services {
    border-top: 1px solid var(--color-border);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 36px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: 20px 20px 0 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-care::before {
    background: linear-gradient(90deg, #818cf8, #6366f1);
}

.service-setup::before {
    background: linear-gradient(90deg, #a78bfa, #8b5cf6);
}

.service-ace::before {
    background: linear-gradient(90deg, #fb923c, #f97316);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(132, 204, 22, 0.15);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-care .service-icon {
    background: rgba(79, 70, 229, 0.15);
}

.service-setup .service-icon {
    background: rgba(168, 85, 247, 0.15);
}

.service-ace .service-icon {
    background: rgba(249, 115, 22, 0.15);
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(132, 204, 22, 0.08);
    border: 1px solid rgba(132, 204, 22, 0.15);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
}

/* ============================================================================
   COMMUNITY / CTA
   ============================================================================ */
#community {
    border-top: 1px solid var(--color-border);
    padding: 120px 0;
}

.community-cta {
    text-align: center;
    margin-top: 40px;
}

.cta-note {
    margin-top: 12px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ============================================================================
   FOOTER
   ============================================================================ */
#landing-footer {
    border-top: 1px solid var(--color-border);
    padding: 40px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.25s ease;
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-copy {
    font-size: 0.8125rem;
    color: #475569;
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */
@media (max-width: 768px) {
    .header-nav {
        display: none;
    }

    #hero {
        padding: 120px 0 80px;
    }

    .hero-stats {
        gap: 32px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    section {
        padding: 80px 0;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .cta-btn,
    .cta-btn-outline {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================================================
   AUTH MODAL
   ============================================================================ */
.auth-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 16px;
    animation: fadeIn 0.2s ease-out;
}

.auth-modal-backdrop.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.auth-modal-content {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 32px;
    width: 100%;
    max-width: 420px;
    position: relative;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.auth-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.auth-close-btn:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.auth-modal-header {
    text-align: center;
    margin-bottom: 24px;
}

.auth-logo {
    height: 28px;
    width: auto;
}

/* Tabs */
.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 24px;
}

.auth-tab {
    flex: 1;
    padding: 10px 0;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    position: relative;
    transition: color 0.25s ease;
}

.auth-tab:hover {
    color: var(--color-text-primary);
}

.auth-tab.active {
    color: var(--color-accent);
}

.auth-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
}

/* Error */
.auth-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.auth-error.hidden {
    display: none;
}

/* Form */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-form.hidden {
    display: none;
}

.auth-field label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.auth-field input {
    width: 100%;
    padding: 12px 14px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    color: var(--color-text-primary);
    font-size: 0.9375rem;
    transition: all 0.25s ease;
    outline: none;
}

.auth-field input::placeholder {
    color: #475569;
}

.auth-field input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(132, 204, 22, 0.15);
}

.auth-submit-btn {
    width: 100%;
    padding: 14px;
    background: var(--color-accent);
    color: #020617;
    font-weight: 700;
    font-size: 1rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.25s ease;
    margin-top: 4px;
}

.auth-submit-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(132, 204, 22, 0.3);
}

.auth-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Divider */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
}

.auth-divider-line {
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.auth-divider-text {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

/* Google Button */
.google-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all 0.25s ease;
}

.google-btn:hover {
    border-color: var(--color-accent);
    background: rgba(132, 204, 22, 0.05);
}

.google-icon {
    width: 20px;
    height: 20px;
}