/* 🎨 CSS Design Token System & Layouts for HeadsUp */

:root {
    --bg-cream: #FAF8F5;
    --text-dark: #1C1D1B;
    --text-muted: #626460;
    --accent-brass: #B79A6B;
    --accent-moss: #4E6A55;
    --bg-console: #121413;
    --border-soft: rgba(28, 29, 27, 0.08);
    --border-brass: rgba(183, 154, 107, 0.25);
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Outfit', sans-serif;
    --transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 🌿 Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-cream);
    color: var(--text-dark);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

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

/* 🌌 Ambient Background Glow */
.ambient-glow {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(183, 154, 107, 0.035) 0%, rgba(250, 248, 245, 0) 70%);
    pointer-events: none;
    z-index: -1;
    transition: var(--transition);
}

/* 🧭 Navigation Header */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(250, 248, 245, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-soft);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 600;
    color: var(--text-dark);
    text-decoration: none;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
}

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

.nav-btn {
    padding: 8px 18px;
    background-color: var(--text-dark);
    color: #FFF !important;
    border-radius: 20px;
    font-weight: 500 !important;
    font-size: 13px !important;
}

.nav-btn:hover {
    background-color: var(--accent-brass);
}

/* 🎬 Hero Section */
.hero-section {
    padding-top: 180px;
    padding-bottom: 100px;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 72px;
    font-weight: 300;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 300;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px auto;
}

/* 🔘 Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--text-dark);
    color: #FFF;
    border: 1px solid var(--text-dark);
}

.btn-primary:hover {
    background-color: var(--accent-brass);
    border-color: var(--accent-brass);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-dark);
    border: 1px solid var(--border-soft);
    margin-left: 12px;
}

.btn-secondary:hover {
    border-color: var(--text-dark);
    transform: translateY(-2px);
}

/* 🌀 Simulator Section */
.simulator-section {
    padding: 100px 0;
    background-color: rgba(28, 29, 27, 0.02);
    border-top: 1px solid var(--border-soft);
    border-bottom: 1px solid var(--border-soft);
}

.simulator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 80px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 40px;
    font-weight: 300;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 40px;
    font-weight: 300;
}

.interactive-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.step-card {
    display: flex;
    gap: 20px;
    padding: 16px;
    border-left: 2px solid var(--border-soft);
    transition: var(--transition);
}

.step-card.active {
    border-color: var(--accent-brass);
    background-color: #FFF;
    box-shadow: 0 4px 20px rgba(0,0,0,0.02);
}

.step-num {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--accent-brass);
    font-weight: 600;
}

.step-card h3 {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 4px;
}

.step-card p {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 300;
}

/* 🔘 Breathing Core Widget */
.simulator-widget {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 48px;
}

.breathing-core-wrapper {
    position: relative;
    width: 220px;
    height: 220px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.pulse-halo {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--accent-brass);
    opacity: 0.08;
    transform: scale(1);
    transition: var(--transition);
}

.breathing-core {
    position: relative;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background-color: var(--accent-brass);
    border: none;
    outline: none;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(183, 154, 107, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.breathing-core:active {
    transform: scale(0.95);
    box-shadow: 0 5px 15px rgba(183, 154, 107, 0.1);
}

.core-label {
    color: #FFF;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    pointer-events: none;
}

/* 💻 Console Monitor */
.simulator-console {
    width: 100%;
    max-width: 400px;
    background-color: var(--bg-console);
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    overflow: hidden;
    font-family: monospace;
    font-size: 12px;
    border: 1px solid rgba(255,255,255,0.05);
}

.console-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    background-color: rgba(255,255,255,0.02);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot.red { background-color: #FF5F56; }
.dot.yellow { background-color: #FFBD2E; }
.dot.green { background-color: #27C93F; }

.console-title {
    color: rgba(255,255,255,0.4);
    margin-left: auto;
    font-size: 10px;
    letter-spacing: 1px;
}

.console-logs {
    height: 140px;
    padding: 16px;
    overflow-y: auto;
    color: #8E918F;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.console-line {
    animation: console-entry 0.3s ease-out forwards;
}

.console-line.placeholder {
    color: rgba(255,255,255,0.25);
    font-style: italic;
}

.console-line span {
    color: var(--accent-brass);
}

.console-stats {
    display: flex;
    justify-content: space-between;
    padding: 12px 16px;
    background-color: rgba(255,255,255,0.02);
    border-top: 1px solid rgba(255,255,255,0.05);
    color: rgba(255,255,255,0.6);
}

.console-stats strong {
    color: var(--accent-brass);
}

/* 🏗️ Features Section */
.features-section {
    padding: 100px 0;
}

.features-header {
    max-width: 600px;
    margin: 0 auto 60px auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-card {
    background-color: #FFF;
    border: 1px solid var(--border-soft);
    padding: 40px 32px;
    border-radius: 16px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.02);
    border-color: var(--accent-brass);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 300;
}

/* 📦 Installation Section */
.installation-section {
    padding: 100px 0 140px 0;
    background-color: rgba(28, 29, 27, 0.02);
    border-top: 1px solid var(--border-soft);
}

.installation-container {
    max-width: 800px;
}

.install-card {
    background-color: #FFF;
    border: 1px solid var(--border-soft);
    padding: 56px;
    border-radius: 24px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.01);
}

.install-steps {
    margin: 32px 0 40px 0;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.install-steps li {
    font-size: 16px;
    font-weight: 300;
    color: var(--text-muted);
}

.text-link {
    color: var(--accent-brass);
    text-decoration: none;
    font-weight: 500;
}

.text-link:hover {
    text-decoration: underline;
}

.install-links {
    display: flex;
    gap: 16px;
}

/* 👣 Footer */
.footer {
    padding: 80px 0 48px 0;
    border-top: 1px solid var(--border-soft);
    background-color: #FFF;
}

.footer-quote {
    font-family: var(--font-serif);
    font-size: 24px;
    font-style: italic;
    color: var(--text-dark);
    max-width: 600px;
    margin: 0 auto 32px auto;
    line-height: 1.4;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
}

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

.copyright {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 300;
}

/* 🎬 Animations */
@keyframes console-entry {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fade-in 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(24px);
    animation: fade-in-up 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 📱 Responsive Styles */
@media (max-width: 768px) {
    .navbar { padding: 8px 0; }
    .nav-links { display: none; } /* Mobile simplifications */
    .hero-section { padding-top: 140px; padding-bottom: 60px; }
    .hero-title { font-size: 44px; }
    .simulator-container { grid-template-columns: 1fr; gap: 48px; }
    .features-grid { grid-template-columns: 1fr; gap: 24px; }
    .install-card { padding: 32px; }
    .install-links { flex-direction: column; }
    .btn { text-align: center; }
}