/* ===== Reset & Base ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #F8FAFC;
    --color-surface: #FFFFFF;
    --color-text: #0F172A;
    --color-muted: #64748B;
    --color-primary: #4F46E5;
    --color-primary-dark: #4338CA;
    --color-primary-light: #EEF2FF;
    --color-accent: #22C55E;
    --color-border: #E2E8F0;
    --color-dark: #0B1120;
    --color-dark-2: #151E33;
    --radius-lg: 20px;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 8px 20px -10px rgba(15, 23, 42, 0.15);
    --shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.18);
    --container: 1180px;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3 {
    letter-spacing: -0.02em;
    font-weight: 700;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
    white-space: nowrap;
}

.btn-lg {
    padding: 15px 28px;
    font-size: 1.02rem;
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 12px 24px -10px rgba(79, 70, 229, 0.55);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

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

.btn-ghost:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

/* ===== Navbar ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(248, 250, 252, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.15rem;
}

.brand-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-primary), #7C3AED);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.navbar-links {
    display: flex;
    gap: 28px;
    font-weight: 500;
    color: var(--color-muted);
}

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

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.navbar-hint {
    color: var(--color-muted);
    font-size: 0.92rem;
}

/* ===== Hero ===== */
.hero {
    background: radial-gradient(circle at 15% 0%, #1E2A4A 0%, var(--color-dark) 55%);
    color: #fff;
    padding: 88px 0 100px;
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(79, 70, 229, 0.18);
    color: #C7D2FE;
    border: 1px solid rgba(129, 140, 248, 0.35);
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 22px;
}

.hero-copy h1 {
    font-size: clamp(2.1rem, 3.6vw, 3.2rem);
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero-copy p {
    color: #B7C0D8;
    font-size: 1.08rem;
    max-width: 520px;
    margin-bottom: 28px;
}

.hero-checklist {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 36px;
}

.hero-checklist li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: #E2E8F0;
    font-size: 0.95rem;
}

.hero-checklist i {
    color: var(--color-accent);
}

.hero-cta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.hero-cta .btn-ghost {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.25);
}

.hero-cta .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.hero-visual {
    position: relative;
}

.hero-visual-frame {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    aspect-ratio: 4 / 3;
}

.hero-visual-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-visual-badge {
    position: absolute;
    bottom: -24px;
    left: -24px;
    background: var(--color-surface);
    color: var(--color-text);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 260px;
}

.hero-visual-badge i {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.hero-visual-badge strong {
    display: block;
    font-size: 0.92rem;
}

.hero-visual-badge span {
    font-size: 0.8rem;
    color: var(--color-muted);
}

/* ===== Section heading ===== */
.section-heading {
    text-align: center;
    max-width: 620px;
    margin: 0 auto 56px;
}

.eyebrow {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.section-heading h2 {
    font-size: clamp(1.6rem, 2.6vw, 2.2rem);
    margin-bottom: 14px;
}

.section-heading p {
    color: var(--color-muted);
    font-size: 1.02rem;
}

/* ===== Features ===== */
.features {
    padding: 100px 0;
}

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

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 30px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 18px;
}

.feature-card h3 {
    font-size: 1.08rem;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--color-muted);
    font-size: 0.94rem;
}

/* ===== Steps ===== */
.steps {
    padding: 0 0 100px;
}

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

.step-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px 28px;
    position: relative;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), #7C3AED);
    color: #fff;
    font-weight: 700;
    margin-bottom: 18px;
}

.step-card h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.step-card p {
    color: var(--color-muted);
    font-size: 0.94rem;
}

/* ===== CTA ===== */
.cta {
    position: relative;
    padding: 100px 0;
    color: #fff;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.cta-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11, 17, 32, 0.92), rgba(79, 70, 229, 0.85));
}

.cta-inner {
    position: relative;
    text-align: center;
    max-width: 640px;
}

.cta h2 {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    margin-bottom: 16px;
}

.cta p {
    color: #DCE1F0;
    margin-bottom: 30px;
    font-size: 1.05rem;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-dark);
    color: #94A3B8;
    padding: 32px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer .brand {
    color: #fff;
}

.footer-text {
    display: flex;
    gap: 18px;
    font-size: 0.88rem;
    flex-wrap: wrap;
}

/* ===== Auth pages ===== */
.auth-section {
    min-height: calc(100vh - 76px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
    background:
        radial-gradient(circle at 85% 10%, rgba(79, 70, 229, 0.08), transparent 45%),
        var(--color-bg);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 44px 40px;
}

.auth-card h1 {
    font-size: 1.6rem;
    margin: 10px 0 6px;
}

.auth-subtext {
    color: var(--color-muted);
    margin-bottom: 28px;
    font-size: 0.95rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-input {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    font-size: 0.95rem;
    font-family: inherit;
    background: #fff;
    color: var(--color-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.form-error {
    color: #DC2626;
    font-size: 0.82rem;
}

.form-error-summary {
    color: #DC2626;
    font-size: 0.88rem;
}

.form-error-summary ul {
    padding-left: 18px;
    list-style: disc;
}

.form-row-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--color-muted);
    cursor: pointer;
}

.auth-switch {
    text-align: center;
    margin-top: 24px;
    font-size: 0.9rem;
    color: var(--color-muted);
}

.auth-switch a {
    color: var(--color-primary);
    font-weight: 600;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
    .hero-inner {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        order: -1;
    }

    .hero-visual-badge {
        position: static;
        margin-top: 20px;
    }

    .features-grid,
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .navbar-links {
        display: none;
    }
}

@media (max-width: 640px) {
    .features-grid,
    .steps-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 56px 0 80px;
    }

    .auth-card {
        padding: 32px 24px;
    }
}