/* ============================================================
   ZEROUPLOAD — DESIGN SYSTEM
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;900&display=swap');

/* ── CSS Variables — Dark Mode Only ── */
:root {
    --grad-start: #00E5B4;
    --grad-end:   #00AAFF;
    --gradient:   linear-gradient(135deg, #00E5B4, #00AAFF);

    --bg:           #0D1F2D;
    --bg-secondary: #112233;
    --bg-card:      #0F2337;
    --bg-card-hover:#132840;
    --border:       rgba(0, 229, 180, 0.1);
    --border-hover: rgba(0, 229, 180, 0.3);
    --text-primary: #FFFFFF;
    --text-secondary:#A0B4C8;
    --text-muted:   rgba(160, 180, 200, 0.5);
    --navbar-bg:    rgba(13, 31, 45, 0.92);
    --footer-bg:    #091929;
    --shadow:       0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-card:  0 4px 24px rgba(0, 0, 0, 0.3);
    --glow:         0 0 20px rgba(0, 229, 180, 0.15);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    transition: background 0.3s, color 0.3s;
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

/* ── Utility ── */
.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-border {
    border: 1px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--gradient);
    color: #0D1F2D;
    font-weight: 700;
    font-size: 15px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 20px rgba(0, 229, 180, 0.3);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 229, 180, 0.4);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    background: transparent;
    color: var(--grad-start);
    font-weight: 600;
    font-size: 15px;
    border-radius: 12px;
    border: 1.5px solid var(--grad-start);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-outline:hover {
    background: rgba(0, 229, 180, 0.08);
    transform: translateY(-2px);
}

.section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--grad-start);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-sub {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 48px;
}

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

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: var(--navbar-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s, border-color 0.3s;
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.navbar-logo img {
    height: 42px;
    width: auto;
    display: block;
    overflow: visible;
}

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

.navbar-nav a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.navbar-nav a:hover { color: var(--text-primary); }

.navbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 18px;
}

.theme-toggle:hover {
    border-color: var(--grad-start);
    color: var(--grad-start);
}

.icon-sun { display: none; }
.icon-moon { display: block; }
[data-theme="light"] .icon-sun { display: block; }
[data-theme="light"] .icon-moon { display: none; }

/* Mobile menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ── Dropdown Menu ── */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    padding: 0;
    transition: color 0.2s;
}

.nav-dropdown-btn:hover,
.nav-dropdown.open .nav-dropdown-btn { color: var(--text-primary); }

.nav-dropdown-arrow {
    font-size: 10px;
    transition: transform 0.2s;
}

.nav-dropdown.open .nav-dropdown-arrow { transform: rotate(180deg); }

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 8px;
    min-width: 200px;
    box-shadow: 0 16px 40px rgba(0,0,0,.25);
    z-index: 200;
}

.nav-dropdown.open .nav-dropdown-menu { display: block; }

.nav-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    border-radius: 9px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.15s;
    white-space: nowrap;
}

.nav-dropdown-menu a:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.nav-dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 6px 8px;
}

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

.hero::before {
    content: '';
    position: absolute;
    top: -200px; left: 50%;
    transform: translateX(-50%);
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(0, 229, 180, 0.07) 0%, transparent 70%);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 100px;
    border: 1px solid var(--border-hover);
    background: rgba(0, 229, 180, 0.05);
    font-size: 13px;
    font-weight: 500;
    color: var(--grad-start);
    margin-bottom: 32px;
}

.hero-badge-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--gradient);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
    font-size: clamp(42px, 7vw, 80px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.hero-sub {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-trust {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-top: 64px;
    flex-wrap: wrap;
}

.hero-trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.hero-trust-item svg {
    color: var(--grad-start);
    flex-shrink: 0;
}

/* ============================================================
   TOOLS GRID
   ============================================================ */
.tools-section {
    padding: 100px 0;
    text-align: center;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 48px;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 32px 28px;
    text-align: left;
    transition: all 0.25s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.25s;
    z-index: 0;
}

.tool-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card), var(--glow);
}

.tool-card:hover::before { opacity: 0.04; }

.tool-card > * { position: relative; z-index: 1; }

.tool-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: rgba(0, 229, 180, 0.08);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
    transition: all 0.25s;
}

.tool-card:hover .tool-icon {
    background: rgba(0, 229, 180, 0.15);
    border-color: var(--grad-start);
}

.tool-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.tool-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.tool-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--grad-start);
    transition: gap 0.2s;
}

.tool-card:hover .tool-card-link { gap: 10px; }

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how-section {
    padding: 100px 0;
    background: var(--bg-secondary);
    text-align: center;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 56px;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 40px; left: calc(16.66% + 20px); right: calc(16.66% + 20px);
    height: 1px;
    background: linear-gradient(90deg, var(--grad-start), var(--grad-end));
    opacity: 0.2;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.step-number {
    width: 80px; height: 80px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
}

.step-number-wrap {
    width: 80px; height: 80px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}

.step-item h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 260px;
}

/* ============================================================
   COUNTER SECTION
   ============================================================ */
.counter-section {
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.counter-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    opacity: 0.04;
    pointer-events: none;
}

.counter-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.counter-item {
    padding: 32px 20px;
    border-radius: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: border-color 0.3s, transform 0.3s;
}

.counter-item:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.counter-number {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
}

.counter-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ============================================================
   WHY SECTION
   ============================================================ */
.why-section {
    padding: 100px 0;
    text-align: center;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 56px;
}

.feature-item {
    padding: 36px 28px;
    border-radius: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    text-align: left;
    transition: all 0.25s;
}

.feature-item:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================================
   BLOG PREVIEW
   ============================================================ */
.blog-section {
    padding: 100px 0;
    background: var(--bg-secondary);
    text-align: center;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
    text-align: left;
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.25s;
    padding: 24px;
    display: flex;
    flex-direction: column;
    text-decoration: none;
}

.blog-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.blog-card-tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--grad-start);
    padding: 4px 10px;
    border-radius: 100px;
    background: rgba(0, 229, 180, 0.08);
    border: 1px solid var(--border);
    margin-bottom: 12px;
}

.blog-card-body { padding: 28px; }

.blog-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
    color: var(--text-primary);
    transition: color 0.2s;
}

.blog-card:hover h3 { color: var(--grad-start); }

.blog-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.blog-card-meta {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 16px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--footer-bg);
    border-top: 1px solid var(--border);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 16px 0 24px;
    max-width: 280px;
}

.footer-logo {
    height: 40px;
    width: auto;
    overflow: visible;
}

.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: rgba(0, 229, 180, 0.05);
    font-size: 12px;
    font-weight: 600;
    color: var(--grad-start);
}

.footer-col h4 {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.footer-col ul { list-style: none; }

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

.footer-col ul li a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color 0.2s;
    white-space: nowrap;
}

.footer-col ul li a:hover { color: var(--grad-start); }

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .counter-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .navbar-nav { display: none; }
    .hamburger { display: flex; }
    .navbar-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 68px; left: 0; right: 0;
        background: var(--navbar-bg);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        padding: 16px 24px 24px;
        gap: 16px;
    }
    .steps-grid { grid-template-columns: 1fr; }
    .steps-grid::before { display: none; }
    .blog-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .hero { padding: 120px 0 80px; }
    .hero h1 { letter-spacing: -1px; }
}

@media (max-width: 480px) {
    .counter-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .tools-grid { grid-template-columns: 1fr; }
    .hero-trust { gap: 16px; }
    .hero-cta { flex-direction: column; align-items: center; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-up:nth-child(1) { transition-delay: 0s; }
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }
.fade-up:nth-child(7) { transition-delay: 0.6s; }
.fade-up:nth-child(8) { transition-delay: 0.7s; }

/* ── Hero tool chips ── */
.hero-tools-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin: 24px 0 32px;
}

.hero-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.hero-chip:hover {
    border-color: var(--border-hover);
    color: var(--grad-start);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,229,180,.1);
}

/* ── Hero trust items enlarged ── */
.hero-trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ── Tool stats grid (counter section bottom row) ── */
.tool-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.tool-stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 26px 16px 20px;
    text-align: center;
    transition: border-color 0.3s, transform 0.3s;
}

.tool-stat-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.tool-stat-num {
    font-size: clamp(32px, 4vw, 48px) !important;
    margin-bottom: 10px;
}

.tool-stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
    line-height: 1.4;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
}

.tool-stat-icon-sm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 8px;
    background: rgba(0, 229, 180, 0.08);
    border: 1px solid rgba(0, 229, 180, 0.2);
    font-size: 13px;
    flex-shrink: 0;
}

@media (max-width: 900px) {
    .tool-stats-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
    .tool-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-tools-chips { gap: 6px; }
    .hero-chip { font-size: 12px; padding: 6px 12px; }
}

/* ── Breadcrumb bar ── */
.breadcrumb-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
    margin-top: 68px; /* navbar height */
    font-size: 12px;
}

.breadcrumb-bar .container {
    display: flex;
    align-items: center;
    gap: 0;
    flex-wrap: wrap;
}

.breadcrumb-bar a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb-bar a:hover { color: var(--grad-start); }

.bc-sep {
    margin: 0 8px;
    color: var(--text-muted);
    opacity: 0.5;
}

.bc-current {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ── Navbar donate button ── */
.navbar-donate {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(0,229,180,.3);
    background: rgba(0,229,180,.08);
    transition: background .2s, border-color .2s, transform .2s;
    flex-shrink: 0;
}
.navbar-donate:hover {
    background: rgba(0,229,180,.18);
    border-color: var(--grad-start);
    transform: scale(1.1);
}
@media (max-width: 768px) {
    #floatingSupport { bottom: 20px; right: 16px; }
}