/* ================================================================
   Pump Alerts — Landing Page Styles
   Dark theme matching the main app design system.
   Single-page, no frameworks, mobile-first.
   ================================================================ */

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

/* ----- Tokens (matching app design system) ----- */
:root {
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    --color-bg:         #080c14;
    --color-bg-surface: #0d1219;
    --color-bg-card:    #111820;
    --color-bg-elevated:#161d27;

    --color-text:       #f0f2f5;
    --color-text-soft:  #b8bfc9;
    --color-text-muted: #4a5568;

    --color-border:     #1e2530;
    --color-accent:     #10b981;
    --color-accent-light:#34d399;
    --color-accent-glow: rgba(16, 185, 129, 0.15);

    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(16, 185, 129, 0.1);

    --duration: 300ms;
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ----- Base ----- */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}

a {
    color: var(--color-accent-light);
    text-decoration: none;
    transition: color var(--duration) var(--ease);
}

a:hover {
    color: #6ee7b7;
}

h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
}

img, svg {
    display: block;
}

/* ----- Container ----- */
.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ================================================================
   NAV
   ================================================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(8, 12, 20, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 3.5rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text);
    font-weight: 600;
    font-size: 1.05rem;
}

.nav-logo:hover {
    color: var(--color-text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--color-text-soft);
    font-size: 0.875rem;
    font-weight: 500;
}

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

.nav-github {
    display: flex;
    align-items: center;
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
    padding: 8rem 0 4rem;
    position: relative;
    overflow: hidden;
}

/* Subtle radial glow behind hero */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 500px;
    background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
}

.hero-badge {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent-light);
    background: var(--color-accent-glow);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 9999px;
    margin-bottom: 1.25rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    letter-spacing: -0.025em;
    margin-bottom: 1rem;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--color-text-soft);
    max-width: 480px;
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    text-decoration: none;
}

.btn-lg {
    padding: 0.7rem 1.5rem;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background: #0ea471;
    color: #fff;
    box-shadow: 0 0 24px rgba(16, 185, 129, 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-soft);
    border: 1px solid var(--color-border);
}

.btn-ghost:hover {
    color: var(--color-text);
    border-color: #2d3748;
    background: rgba(255, 255, 255, 0.03);
}

/* Hero chart SVG */
.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-chart {
    width: 100%;
    max-width: 526px;
    height: auto;
    filter: drop-shadow(0 0 30px rgba(16, 185, 129, 0.08));
    opacity: 0.85;
}

/* ================================================================
   FEATURES
   ================================================================ */
.features {
    padding: 5rem 0;
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    text-align: center;
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.feature-card:hover {
    border-color: rgba(16, 185, 129, 0.25);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-glow);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.feature-icon svg {
    display: inline;
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--color-text-soft);
    line-height: 1.5;
}

/* ================================================================
   HOW IT WORKS
   ================================================================ */
.how-it-works {
    padding: 4rem 0 5rem;
}

.steps-grid {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 1.5rem;
}

.step {
    text-align: center;
    max-width: 240px;
}

.step-number {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-accent-light);
    background: var(--color-accent-glow);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 50%;
    margin-bottom: 1rem;
}

.step h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.step p {
    font-size: 0.875rem;
    color: var(--color-text-soft);
}

.step-arrow {
    padding-top: 0.75rem;
    opacity: 0.4;
}

/* ================================================================
   DOWNLOAD
   ================================================================ */
.download {
    padding: 5rem 0;
    background: var(--color-bg-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.download-inner {
    text-align: center;
}

.download-sub {
    color: var(--color-text-soft);
    margin-bottom: 2.5rem;
    margin-top: -1.5rem;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.btn-download {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--duration) var(--ease);
    min-width: 200px;
}

.btn-download:hover {
    border-color: rgba(16, 185, 129, 0.35);
    box-shadow: var(--shadow-glow);
    color: var(--color-text);
}

.btn-download svg {
    flex-shrink: 0;
    color: var(--color-text-soft);
}

.btn-download:hover svg {
    color: var(--color-accent-light);
}

.btn-download div {
    text-align: left;
}

.btn-download small {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-download strong {
    font-size: 1rem;
    font-weight: 600;
}

.download-note {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.download-note a {
    color: var(--color-text-soft);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.download-note a:hover {
    color: var(--color-accent-light);
}

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
    padding: 2.5rem 0;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text-soft);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

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

.footer-copy {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 768px) {
    .nav-links a:not(.nav-github) {
        display: none;
    }

    .hero {
        padding: 5.5rem 0 3rem;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
        max-width: 360px;
        margin: 0 auto;
    }

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .steps-grid {
        flex-direction: column;
        align-items: center;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-download {
        width: 100%;
        max-width: 280px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ----- Grain texture (subtle) ----- */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.015;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    z-index: 9999;
}

/* ----- Focus visible (a11y) ----- */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}