:root {
    --bg: #050816;
    --bg-soft: #0b1020;
    --card: #111827;
    --accent: #38bdf8;
    --accent-soft: rgba(56,189,248,0.15);
    --text: #e5e7eb;
    --muted: #9ca3af;
    --danger: #f97373;
    --radius-lg: 1.4rem;
    --radius-md: 1rem;
    --shadow-lg: 0 24px 60px rgba(15,23,42,0.8);
    --shadow-soft: 0 18px 40px rgba(15,23,42,0.5);
    --transition-fast: 0.18s ease-out;
    --transition-med: 0.25s ease-out;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: radial-gradient(circle at top, #111827 0, #020617 50%, #000 100%);
    color: var(--text);
}

/* Layout helpers */
.container {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

.site-main {
    padding-top: 5rem;
    padding-bottom: 4rem;
}

/* HEADER */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: linear-gradient(to bottom, rgba(15,23,42,0.98), rgba(15,23,42,0.94));
    border-bottom: 1px solid rgba(148,163,184,0.25);
    backdrop-filter: blur(16px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: .65rem;
    text-decoration: none;
    color: var(--text);
}

.logo-icon {
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 30%, #facc15, #f97316, #0f172a 90%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 0 20px rgba(250,204,21,0.55);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-weight: 600;
    letter-spacing: 0.03em;
    font-size: 1rem;
}

.logo-tagline {
    font-size: .75rem;
    color: var(--muted);
}

/* Nav */
.main-nav {
    position: relative;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1.2rem;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: .9rem;
    padding: .4rem .75rem;
    border-radius: 999px;
    transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.nav-links a:hover,
.nav-links a:focus {
    color: #e5e7eb;
    background: rgba(148,163,184,0.12);
    transform: translateY(-1px);
}

/* Mobile nav */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    padding: .3rem;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    margin: 4px 0;
    background: #e5e7eb;
    border-radius: 999px;
}

/* HERO */
.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: center;
    padding-top: 2rem;
}

.hero-title {
    font-size: clamp(2.2rem, 3vw + 1rem, 3.2rem);
    line-height: 1.1;
    margin: 0 0 1rem;
}

.hero-highlight {
    background: linear-gradient(to right, #e0f2fe, #a5b4fc);
    -webkit-background-clip: text;
    color: transparent;
}

.hero-text {
    font-size: .98rem;
    color: var(--muted);
    max-width: 32rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 1.5rem;
}

.btn-primary,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: .7rem 1.3rem;
    border-radius: 999px;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: .9rem;
    text-decoration: none;
    transition: background var(--transition-med), color var(--transition-med), transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
}

.btn-primary {
    background: radial-gradient(circle at 30% 0, #38bdf8, #0ea5e9, #1d4ed8);
    box-shadow: var(--shadow-soft);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-ghost {
    background: rgba(15,23,42,0.65);
    border-color: rgba(148,163,184,0.4);
    color: var(--muted);
}

.btn-ghost:hover {
    background: rgba(15,23,42,0.9);
}

/* Hero visual */
.hero-visual {
    position: relative;
    padding: 1.5rem;
}

.hero-card {
    background: radial-gradient(circle at top, #1f2937, #020617);
    border-radius: 1.4rem;
    padding: 1.4rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(148,163,184,0.2);
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .3rem .75rem;
    border-radius: 999px;
    background: rgba(15,23,42,0.8);
    border: 1px solid rgba(56,189,248,0.45);
    font-size: .75rem;
    color: #bae6fd;
    margin-bottom: 1rem;
}

.hero-metrics {
    display: flex;
    justify-content: space-between;
    gap: 1.1rem;
    margin-top: 1.2rem;
    font-size: .8rem;
    color: var(--muted);
}

/* Cards / Sections */
.section {
    margin-top: 4rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 1.4rem;
}

.section-subtitle {
    font-size: .9rem;
    color: var(--muted);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.5rem;
}

.card {
    background: linear-gradient(145deg, rgba(15,23,42,0.96), #020617);
    border-radius: var(--radius-lg);
    padding: 1.3rem 1.4rem;
    border: 1px solid rgba(148,163,184,0.18);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
}

.card::before {
    content: "";
    position: absolute;
    inset: -30%;
    opacity: 0;
    background: radial-gradient(circle at top, rgba(56,189,248,0.25), transparent 55%);
    transition: opacity var(--transition-med);
    pointer-events: none; /* important: don't block clicks */
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(56,189,248,0.4);
}

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

.card-badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .25rem .6rem;
    border-radius: 999px;
    background: rgba(15,23,42,0.9);
    border: 1px solid rgba(148,163,184,0.4);
    font-size: .7rem;
    color: var(--muted);
}

.card-title {
    margin: .8rem 0 .3rem;
    font-size: 1rem;
}

.card-text {
    font-size: .86rem;
    color: var(--muted);
    margin-bottom: .9rem;
}

/* Timer UI */
.timer-shell {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: .75rem;
}

.timer-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: .9rem;
    color: var(--muted);
}

.timer-circle {
    width: 120px;
    height: 120px;
    border-radius: 999px;
    border: 2px solid rgba(148,163,184,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: .5rem auto;
    position: relative;
    overflow: hidden;
}

.timer-circle::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 4px solid transparent;
    border-top-color: var(--accent);
    border-right-color: rgba(56,189,248,0.4);
    transform-origin: 50% 50%;
    animation: spin 12s linear infinite;
    opacity: .7;
}

.timer-count {
    font-size: 1.5rem;
    font-weight: 600;
}

.timer-phase {
    font-size: .85rem;
    margin-top: .25rem;
    color: var(--muted);
    text-align: center;
}

.timer-controls {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    justify-content: center;
}

.timer-toggle {
    display: flex;
    gap: .6rem;
    margin-top: .6rem;
    justify-content: center;
    flex-wrap: wrap;
}

.toggle-chip {
    font-size: .75rem;
    padding: .3rem .65rem;
    border-radius: 999px;
    background: rgba(15,23,42,0.9);
    border: 1px solid rgba(148,163,184,0.45);
    color: var(--muted);
    cursor: pointer;
}

.toggle-chip.active {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: #e5f3ff;
}

/* Footer */
.site-footer {
    border-top: 1px solid rgba(148,163,184,0.25);
    background: rgba(15,23,42,0.96);
    padding: 1.8rem 0 2rem;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: space-between;
    font-size: .8rem;
}

.footer-text {
    color: var(--muted);
    max-width: 32rem;
}

.footer-links {
    display: flex;
    gap: 1rem;
}

.footer-links a {
    color: var(--muted);
    text-decoration: none;
}

.footer-links a:hover {
    color: #e5e7eb;
}

/* Animations */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: minmax(0, 1fr);
    }
    .hero-visual {
        order: -1;
        padding-bottom: 0;
    }
    .site-main {
        padding-top: 4rem;
    }
    .nav-toggle {
        display: inline-block;
    }
    .nav-links {
        position: absolute;
        top: 120%;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        padding: .75rem;
        background: rgba(15,23,42,0.98);
        border-radius: 1rem;
        border: 1px solid rgba(148,163,184,0.4);
        box-shadow: var(--shadow-soft);
        min-width: 10rem;
        transform-origin: top right;
        transform: scale(0.9);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-fast), transform var(--transition-fast);
    }
    .nav-links.open {
        opacity: 1;
        transform: scale(1);
        pointer-events: auto;
    }
}





/* CONTACT & FORMS */
.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
    gap: 1.8rem;
    align-items: flex-start;
}

.form-group {
    margin-bottom: 1rem;
    font-size: .9rem;
}

.form-group-inline {
    display: flex;
    align-items: flex-start;
}

.form-label {
    display: block;
    margin-bottom: .25rem;
    color: var(--muted);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: .6rem .75rem;
    border-radius: .8rem;
    border: 1px solid rgba(148,163,184,0.4);
    background: #020617;
    color: var(--text);
    font-size: .9rem;
    resize: vertical;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(56,189,248,0.6);
}

.form-checkbox {
    display: flex;
    gap: .5rem;
    font-size: .82rem;
    color: var(--muted);
}

.form-checkbox input {
    margin-top: .15rem;
}

.form-message {
    border-radius: .9rem;
    padding: .7rem .9rem;
    font-size: .85rem;
    margin-bottom: 1rem;
}

.form-message-success {
    background: rgba(22,163,74,0.08);
    border: 1px solid rgba(22,163,74,0.6);
    color: #bbf7d0;
}

.form-message-error {
    background: rgba(248,113,113,0.08);
    border: 1px solid rgba(248,113,113,0.6);
    color: #fecaca;
}

.form-message-error ul {
    margin: .4rem 0 0;
    padding-left: 1.1rem;
}

@media (max-width: 768px) {
    .contact-layout {
        grid-template-columns: minmax(0, 1fr);
    }
}