/* ===================================
   ImpetraInsights™ — styles.css
   =================================== */

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

:root {
    --color-bg: #ffffff;
    --color-text: #2d2d2d;
    --color-text-light: #5a5a5a;
    --color-accent: #a6ce39;
    --color-accent-dark: #8ab52e;
    --color-border: #e0e0e0;
    --color-bg-alt: #f7f8fa;
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --max-width: 1080px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 {
    line-height: 1.25;
    font-weight: 600;
}

h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

h3 {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

/* ---- Vertical Nav ---- */
.vertical-nav {
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

.vertical-nav .container {
    display: flex;
    justify-content: center;
}

.vertical-nav-list {
    list-style: none;
    display: flex;
    gap: 0;
}

.vertical-nav-link {
    display: block;
    padding: 12px 24px;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: color 0.15s, border-color 0.15s;
}

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

.vertical-nav-link.active {
    color: var(--color-text);
    border-bottom-color: var(--color-accent);
}

/* ---- Schedule Page ---- */
.schedule-section {
    padding: 64px 0;
}

.schedule-section h1 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 12px;
}

.schedule-intro {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.0625rem;
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.scheduler-container {
    max-width: 800px;
    margin: 0 auto;
}

.scheduler-iframe {
    width: 100%;
    min-height: 700px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
}

.logo-link {
    color: inherit;
    text-decoration: none;
}

/* ---- Header ---- */
.site-header {
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    background: var(--color-bg);
    z-index: 100;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--color-accent-dark);
}

.header-cta {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    background: none;
    padding: 8px 20px;
    border: 1px solid var(--color-text);
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-primary);
    text-decoration: none;
    display: inline-block;
}

.header-cta:hover {
    background: var(--color-text);
    color: var(--color-bg);
}

/* ---- Buttons ---- */
.btn {
    display: inline-block;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--color-accent);
    color: #1a1a1a;
    padding: 14px 32px;
}

.btn-primary:hover {
    background: var(--color-accent-dark);
}

.btn-large {
    font-size: 1.0625rem;
    padding: 16px 40px;
}

.btn-full {
    width: 100%;
}

/* ---- Hero ---- */
.hero {
    padding: 96px 0 80px;
}

.hero h1 {
    font-size: 2.5rem;
    max-width: 720px;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.subheadline {
    font-size: 1.1875rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin-bottom: 36px;
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ---- Social Proof ---- */
.proof-section {
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

.proof-strip {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.proof-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.proof-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.proof-label {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 2px;
}

.proof-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* ---- Video ---- */
.video-section {
    padding: 64px 0;
    background: var(--color-bg-alt);
}

.video-container {
    max-width: 800px;
    margin: 0 auto;
}

.video-placeholder {
    aspect-ratio: 16 / 9;
    background: #1a1a1a;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
}

.play-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: 0.4;
}

.video-placeholder p {
    font-size: 0.8125rem;
    opacity: 0.4;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ---- Problem ---- */
.problem-section {
    padding: 80px 0;
}

.problem-section h2 {
    text-align: center;
    margin-bottom: 48px;
}

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

.problem-item {
    padding: 24px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
}

.problem-item p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ---- Solution ---- */
.solution-section {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.solution-section h2 {
    text-align: center;
    margin-bottom: 48px;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 40px;
}

.solution-item {
    padding: 24px;
    background: var(--color-bg);
    border-radius: 6px;
    border: 1px solid var(--color-border);
}

.solution-item p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.solution-clarification {
    text-align: center;
    padding: 24px;
    border-top: 1px solid var(--color-border);
}

.solution-clarification p {
    font-size: 1.0625rem;
    color: var(--color-text-light);
}

/* ---- Process ---- */
.process-section {
    padding: 80px 0;
}

.process-section h2 {
    text-align: center;
    margin-bottom: 48px;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-accent);
    color: #1a1a1a;
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.process-step p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.process-cta {
    text-align: center;
    margin-top: 48px;
}

/* ---- Bottom CTA ---- */
.bottom-cta-section {
    padding: 80px 0;
    background: var(--color-bg-alt);
    text-align: center;
}

.bottom-cta-section h2 {
    margin-bottom: 12px;
}

.bottom-cta-section p {
    color: var(--color-text-light);
    margin-bottom: 32px;
    font-size: 1.0625rem;
}

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.15s, visibility 0.15s;
}

.modal-overlay[aria-hidden="true"] {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.modal {
    background: var(--color-bg);
    border-radius: 8px;
    padding: 40px;
    width: 100%;
    max-width: 480px;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.75rem;
    cursor: pointer;
    color: var(--color-text-light);
    line-height: 1;
    padding: 4px;
}

.modal-close:hover {
    color: var(--color-text);
}

.modal h2 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.form-intro {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    margin-bottom: 24px;
}

/* ---- Form ---- */
.form-group {
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
}

.required {
    color: #c0392b;
}

input[type="text"],
input[type="email"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 0.9375rem;
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-bg);
}

input[type="text"]:focus,
input[type="email"]:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(166, 206, 57, 0.2);
}

input::placeholder {
    color: #b0b0b0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--color-text-light);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 3px;
    flex-shrink: 0;
}

.form-status {
    text-align: center;
    margin-top: 12px;
    font-size: 0.9375rem;
    min-height: 20px;
}

.form-status.success {
    color: #27ae60;
}

.form-status.error {
    color: #c0392b;
}

/* ---- Questionnaire ---- */
.questionnaire-section {
    padding: 64px 0;
    max-width: 640px;
    margin: 0 auto;
}

.questionnaire-section h1 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.q-greeting {
    font-size: 1.0625rem;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.q-intro {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

.q-loading-text,
.q-error-text,
.q-completed-text {
    color: var(--color-text-light);
    font-size: 1.0625rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.q-group {
    margin-bottom: 24px;
}

.q-group > label:first-child {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
    line-height: 1.4;
}

.q-radio-group,
.q-checkbox-group {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.q-radio-label,
.q-checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--color-text);
    cursor: pointer;
}

.q-radio-label input,
.q-checkbox-label input {
    margin: 0;
}

.questionnaire-section textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 0.9375rem;
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-bg);
    resize: vertical;
}

.questionnaire-section textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(166, 206, 57, 0.2);
}

/* ---- Footer ---- */
.site-footer {
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.site-footer p {
    font-size: 0.8125rem;
    color: var(--color-text-light);
}

.site-footer a {
    color: var(--color-text-light);
}

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

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .hero {
        padding: 64px 0 56px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .subheadline {
        font-size: 1.0625rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .problem-grid,
    .solution-grid,
    .process-steps {
        grid-template-columns: 1fr;
    }

    .proof-strip {
        gap: 24px;
    }

    .proof-divider {
        display: none;
    }

    .proof-strip {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .header-cta {
        display: none;
    }

    .vertical-nav-link {
        padding: 10px 16px;
        font-size: 0.75rem;
    }

    .modal {
        padding: 28px 20px;
    }
}