/* EBOX Referral Page - Official Brand Style */
/* ========================================== */

:root {
    --ebox-dark: #343434;
    --ebox-dark-secondary: #2a2a2a;
    --ebox-red: #be2323;
    --ebox-red-hover: #a01d1d;
    --ebox-teal: #00a896;
    --ebox-white: #ffffff;
    --ebox-gray-50: #f8f8f8;
    --ebox-gray-100: #f0f0f0;
    --ebox-gray-200: #e0e0e0;
    --ebox-gray-400: #9e9e9e;
    --ebox-gray-600: #616161;
    --ebox-gray-800: #424242;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--ebox-dark);
    background: var(--ebox-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--ebox-red);
    color: var(--ebox-white);
    padding: 8px 16px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    z-index: 10000;
    transition: top 0.2s ease;
    border-radius: 0 0 4px 0;
}

.skip-link:focus {
    top: 0;
}

/* Header */
.site-header {
    background: var(--ebox-dark);
    padding: 0 24px;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.header-logo {
    display: flex;
    align-items: center;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.header-logo:hover {
    opacity: 0.85;
}

.header-logo svg {
    display: block;
}

.header-cta {
    color: var(--ebox-white);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 8px 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.header-cta:hover {
    background: var(--ebox-white);
    color: var(--ebox-dark);
    border-color: var(--ebox-white);
}

/* Hero */
.hero {
    background: var(--ebox-dark);
    padding: 80px 24px 100px;
    text-align: center;
}

.hero-container {
    max-width: 720px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.1);
    color: var(--ebox-white);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 8px 18px;
    border-radius: 30px;
    margin-bottom: 28px;
    border: 1px solid rgba(255,255,255,0.15);
}

.hero h1 {
    font-size: 52px;
    font-weight: 900;
    color: var(--ebox-white);
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -1.5px;
}

.hero h1 .highlight {
    color: var(--ebox-red);
}

.hero-subtitle {
    color: rgba(255,255,255,0.75);
    font-size: 18px;
    margin-bottom: 40px;
    font-weight: 500;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle strong {
    color: var(--ebox-white);
    font-weight: 700;
}

/* Referral Card */
.referral-card {
    background: var(--ebox-white);
    border-radius: 16px;
    padding: 36px 32px;
    margin: 0 auto 32px;
    max-width: 440px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.referral-label {
    color: var(--ebox-gray-600);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 14px;
    font-weight: 700;
}

.referral-code-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    cursor: pointer;
    background: var(--ebox-gray-50);
    border: 2px dashed var(--ebox-gray-200);
    padding: 18px 36px;
    border-radius: 12px;
    transition: all 0.2s ease;
    font-family: inherit;
    width: 100%;
}

.referral-code-box:hover {
    background: var(--ebox-gray-100);
    border-color: var(--ebox-red);
    transform: translateY(-2px);
}

.referral-code-box:focus-visible {
    outline: 3px solid var(--ebox-teal);
    outline-offset: 2px;
}

.referral-code-text {
    font-size: 40px;
    font-weight: 900;
    color: var(--ebox-red);
    letter-spacing: 3px;
    font-family: 'SF Mono', SFMono-Regular, ui-monospace, monospace;
}

.copy-icon {
    color: var(--ebox-red);
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.referral-hint {
    color: var(--ebox-gray-400);
    font-size: 13px;
    margin-top: 14px;
    font-weight: 500;
}

/* CTA Button */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 36px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
    background: var(--ebox-red);
    color: var(--ebox-white);
    border: 2px solid var(--ebox-red);
    transition: all 0.2s ease;
    letter-spacing: 0.3px;
    cursor: pointer;
}

.cta-button:hover {
    background: var(--ebox-red-hover);
    border-color: var(--ebox-red-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(190, 35, 35, 0.35);
}

.cta-button:focus-visible {
    outline: 3px solid var(--ebox-teal);
    outline-offset: 2px;
}

/* Sections Common */
.section-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-size: 38px;
    font-weight: 900;
    color: var(--ebox-dark);
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -1px;
    line-height: 1.2;
}

.section-title .accent {
    color: var(--ebox-red);
}

.section-subtitle {
    color: var(--ebox-gray-600);
    font-size: 17px;
    text-align: center;
    max-width: 560px;
    margin: 0 auto 48px;
    line-height: 1.6;
}

/* How It Works */
.how-it-works {
    background: var(--ebox-white);
    padding: 100px 0;
}

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

.step {
    text-align: center;
    padding: 32px 24px;
    background: var(--ebox-gray-50);
    border-radius: 16px;
    border: 1px solid var(--ebox-gray-100);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.step:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.06);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--ebox-red);
    color: var(--ebox-white);
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 20px;
    font-weight: 800;
    color: var(--ebox-dark);
    margin-bottom: 10px;
}

.step p {
    color: var(--ebox-gray-600);
    font-size: 15px;
    line-height: 1.6;
}

.step p strong {
    color: var(--ebox-dark);
    font-weight: 700;
}

/* Benefits */
.benefits {
    background: var(--ebox-gray-50);
    padding: 100px 0;
}

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

.benefit-item {
    background: var(--ebox-white);
    padding: 36px 28px;
    border-radius: 16px;
    border: 1px solid var(--ebox-gray-100);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.benefit-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.06);
}

.benefit-icon {
    width: 52px;
    height: 52px;
    background: var(--ebox-red);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ebox-white);
    margin-bottom: 20px;
}

.benefit-item h3 {
    font-size: 18px;
    font-weight: 800;
    color: var(--ebox-dark);
    margin-bottom: 10px;
}

.benefit-item p {
    color: var(--ebox-gray-600);
    font-size: 15px;
    line-height: 1.6;
}

/* FAQ */
.faq {
    background: var(--ebox-white);
    padding: 100px 0;
}

.accordion {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.accordion-item {
    background: var(--ebox-gray-50);
    border-radius: 12px;
    border: 1px solid var(--ebox-gray-100);
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.accordion-item:hover {
    border-color: var(--ebox-gray-200);
}

.accordion-item.active {
    border-color: var(--ebox-red);
    background: var(--ebox-white);
}

.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 22px 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: background-color 0.2s ease;
}

.accordion-header:hover {
    background-color: var(--ebox-gray-100);
}

.accordion-item.active .accordion-header {
    background-color: #fdf2f2;
}

.accordion-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--ebox-dark);
    padding-right: 16px;
}

.accordion-item.active .accordion-title {
    color: var(--ebox-red);
}

.accordion-icon {
    color: var(--ebox-gray-400);
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
    color: var(--ebox-red);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    padding: 0 24px;
}

.accordion-item.active .accordion-content {
    max-height: 500px;
    padding: 0 24px 22px;
}

.accordion-content p,
.accordion-content ol,
.accordion-content ul {
    color: var(--ebox-gray-600);
    font-size: 15px;
    line-height: 1.7;
}

.accordion-content p {
    margin-bottom: 12px;
}

.accordion-content ol,
.accordion-content ul {
    margin: 0 0 12px 20px;
    padding: 0;
}

.accordion-content li {
    margin-bottom: 6px;
}

.accordion-content a {
    color: var(--ebox-red);
    text-decoration: none;
    font-weight: 600;
}

.accordion-content a:hover {
    text-decoration: underline;
}

.accordion-content strong {
    color: var(--ebox-dark);
    font-weight: 700;
}

/* Footer */
footer {
    background: var(--ebox-dark);
    color: var(--ebox-white);
    padding: 48px 24px;
    text-align: center;
}

.footer-inner {
    max-width: 800px;
    margin: 0 auto;
}

.footer-copy {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    margin-bottom: 6px;
    font-weight: 500;
}

.footer-legal {
    color: rgba(255,255,255,0.4);
    font-size: 12px;
    line-height: 1.5;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--ebox-dark);
    color: var(--ebox-white);
    padding: 14px 26px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    pointer-events: none;
    white-space: nowrap;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast svg {
    color: var(--ebox-teal);
    flex-shrink: 0;
}

/* Focus Styles */
a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--ebox-teal);
    outline-offset: 2px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 60px 20px 72px;
    }

    .hero h1 {
        font-size: 34px;
        letter-spacing: -1px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .referral-card {
        padding: 28px 22px;
    }

    .referral-code-text {
        font-size: 32px;
        letter-spacing: 2px;
    }

    .section-title {
        font-size: 28px;
    }

    .section-subtitle {
        font-size: 15px;
    }

    .steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .step,
    .benefit-item {
        padding: 28px 22px;
    }

    .cta-button {
        width: 100%;
        justify-content: center;
    }

    .accordion-title {
        font-size: 15px;
    }

    .accordion-header {
        padding: 18px 20px;
    }

    .accordion-content {
        padding: 0 20px;
    }

    .accordion-item.active .accordion-content {
        padding: 0 20px 18px;
    }
}

@media (max-width: 480px) {
    .header-inner {
        height: 56px;
    }

    .header-cta {
        padding: 6px 14px;
        font-size: 13px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .referral-code-text {
        font-size: 28px;
    }

    .referral-code-box {
        padding: 14px 24px;
    }

    .how-it-works,
    .benefits,
    .faq {
        padding: 64px 0;
    }
}