/* ============================================
   TAVALE — Brand Refresh Stylesheet
   Colours from Tavale brand guidelines
   Style inspired by Monzo's clean, bold approach
   ============================================ */

/* --- CSS Variables --- */
:root {
    /* Tavale Brand Colours */
    --silver-foil: #F0EDF0;
    --light-blue-grey: #DAE2EA;
    --medium-blue: #97C9D2;
    --teal: #669FAF;
    --dark-teal: #46738D;
    --navy: #36526D;

    /* Functional colours */
    --bg-primary: #ffffff;
    --bg-secondary: var(--silver-foil);
    --bg-dark: var(--navy);
    --text-primary: #1a1a2e;
    --text-secondary: #555566;
    --text-on-dark: var(--silver-foil);
    --accent: var(--dark-teal);
    --accent-hover: var(--navy);
    --accent-light: var(--medium-blue);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3.25rem;
    --font-size-5xl: 4rem;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(54, 82, 109, 0.08);
    --shadow-md: 0 4px 12px rgba(54, 82, 109, 0.1);
    --shadow-lg: 0 8px 30px rgba(54, 82, 109, 0.12);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

ul {
    list-style: none;
}

/* --- Container --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.nav--scrolled {
    border-bottom-color: var(--light-blue-grey);
    box-shadow: var(--shadow-sm);
}

.nav__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav__logo {
    display: flex;
    align-items: center;
}

.nav__logo-img {
    height: 28px;
    width: auto;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav__links a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.nav__links a:hover {
    color: var(--text-primary);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--navy);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family);
    font-weight: 600;
    font-size: var(--font-size-sm);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn--primary {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.btn--primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.btn--outline:hover {
    background: var(--accent);
    color: white;
}

.btn--white {
    background: white;
    color: var(--navy);
    border-color: white;
}

.btn--white:hover {
    background: var(--silver-foil);
    border-color: var(--silver-foil);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--nav {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    padding: 8px 20px;
}

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

.btn--lg {
    padding: 14px 32px;
    font-size: var(--font-size-base);
}

.btn--full {
    width: 100%;
}

/* --- Section Headers --- */
.section-header {
    max-width: 640px;
    margin-bottom: var(--space-xl);
}

.section-header--center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-header__eyebrow {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--teal);
    margin-bottom: var(--space-sm);
}

.section-header__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.section-header__subtitle {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin-top: var(--space-sm);
    line-height: 1.7;
}

/* --- Hero --- */
.hero {
    padding: calc(72px + var(--space-3xl)) 0 var(--space-3xl);
    background: linear-gradient(170deg, var(--bg-primary) 0%, var(--silver-foil) 100%);
}

.hero__content {
    max-width: 720px;
}

.hero__eyebrow {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--teal);
    margin-bottom: var(--space-md);
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.08;
    color: var(--navy);
    letter-spacing: -1.5px;
    margin-bottom: var(--space-md);
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 560px;
    margin-bottom: var(--space-lg);
}

.hero__ctas {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.hero__stats {
    display: flex;
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--light-blue-grey);
}

.stat__number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--dark-teal);
    letter-spacing: -1px;
}

.stat__label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: 2px;
}

/* --- Services --- */
.services {
    padding: var(--space-3xl) 0;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.service-card {
    background: var(--bg-secondary);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.service-card__icon {
    width: 56px;
    height: 56px;
    background: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-teal);
    margin-bottom: var(--space-md);
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.service-card__desc {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.service-card__link {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--accent);
}

.service-card__link:hover {
    color: var(--accent-hover);
}

/* --- Transformation --- */
.transformation {
    padding: var(--space-3xl) 0;
    background: var(--bg-secondary);
}

.transformation__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.transformation__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: var(--space-sm);
}

.transformation__desc {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.transformation__steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.step {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.step__number {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--teal);
    background: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.step__title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.step__desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.proof-card {
    background: var(--navy);
    color: var(--text-on-dark);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    position: sticky;
    top: 100px;
}

.proof-card__label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--medium-blue);
    margin-bottom: var(--space-sm);
}

.proof-card__stat {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: var(--space-sm);
}

.proof-card__desc {
    font-size: var(--font-size-base);
    color: var(--light-blue-grey);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.proof-card__before-after {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.proof-card__item {
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.proof-card__item--before {
    background: rgba(255, 255, 255, 0.08);
}

.proof-card__item--after {
    background: rgba(102, 159, 175, 0.2);
}

.proof-card__tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
    color: var(--medium-blue);
}

/* --- Workshops --- */
.workshops {
    padding: var(--space-3xl) 0;
}

.workshops__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.workshop-card {
    border: 2px solid var(--light-blue-grey);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.workshop-card:hover {
    border-color: var(--teal);
    transform: translateY(-4px);
}

.workshop-card__number {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--teal);
    margin-bottom: var(--space-md);
}

.workshop-card__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.workshop-card__desc {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

/* --- Experts --- */
.experts {
    padding: var(--space-3xl) 0;
    background: var(--bg-secondary);
}

.experts__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.expert-card {
    background: white;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.expert-card__avatar {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--dark-teal), var(--navy));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
}

.expert-card__name {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.expert-card__role {
    font-size: var(--font-size-sm);
    color: var(--teal);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.expert-card__bio {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.expert-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    background: var(--silver-foil);
    color: var(--dark-teal);
    border-radius: 100px;
}

/* --- CTA Banner --- */
.cta-banner {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, var(--dark-teal) 0%, var(--navy) 100%);
    color: white;
    text-align: center;
}

.cta-banner__content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-banner__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.5px;
    margin-bottom: var(--space-sm);
}

.cta-banner__desc {
    font-size: var(--font-size-md);
    color: var(--light-blue-grey);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

/* --- Podcast --- */
.podcast {
    padding: var(--space-3xl) 0;
}

.podcast__layout {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.podcast__content {
    flex: 1;
}

.podcast__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: var(--space-sm);
}

.podcast__desc {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.podcast__visual {
    flex-shrink: 0;
}

.podcast__icon-block {
    width: 160px;
    height: 160px;
    background: linear-gradient(135deg, var(--medium-blue), var(--dark-teal));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

/* --- Contact --- */
.contact {
    padding: var(--space-3xl) 0;
    background: var(--bg-secondary);
}

.contact__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.contact__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: var(--space-sm);
}

.contact__desc {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.contact__location h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.contact__location p,
.contact__location a {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.contact__location a:hover {
    color: var(--accent);
}

.contact__social-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--accent);
}

.contact__social-link:hover {
    color: var(--accent-hover);
}

/* --- Contact Form --- */
.contact__form-wrapper {
    background: white;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-group .optional {
    font-weight: 400;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    padding: 12px 16px;
    border: 2px solid var(--light-blue-grey);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(102, 159, 175, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #aab0bd;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* --- Footer --- */
.footer {
    padding: var(--space-xl) 0 var(--space-lg);
    background: var(--navy);
    color: var(--text-on-dark);
}

.footer__layout {
    display: flex;
    justify-content: space-between;
    gap: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
    display: block;
    margin-bottom: var(--space-xs);
}

.footer__logo-img {
    height: 24px;
    width: auto;
}

.footer__tagline {
    font-size: var(--font-size-sm);
    color: var(--light-blue-grey);
}

.footer__links {
    display: flex;
    gap: var(--space-xl);
}

.footer__col h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-sm);
}

.footer__col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer__col a {
    font-size: var(--font-size-sm);
    color: var(--light-blue-grey);
    transition: color 0.2s ease;
}

.footer__col a:hover {
    color: white;
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
}

.footer__bottom p {
    font-size: var(--font-size-sm);
    color: var(--light-blue-grey);
}

.footer__legal {
    display: flex;
    gap: var(--space-md);
}

.footer__legal a {
    font-size: var(--font-size-sm);
    color: var(--light-blue-grey);
    transition: color 0.2s ease;
}

.footer__legal a:hover {
    color: white;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .hero__title {
        font-size: var(--font-size-4xl);
    }

    .transformation__layout {
        grid-template-columns: 1fr;
    }

    .proof-card {
        position: static;
    }

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

@media (max-width: 768px) {
    /* Nav mobile */
    .nav__toggle {
        display: flex;
    }

    .nav__links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--space-md);
        gap: var(--space-sm);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--light-blue-grey);
    }

    .nav__links--open {
        display: flex;
    }

    .nav__toggle--open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav__toggle--open span:nth-child(2) {
        opacity: 0;
    }
    .nav__toggle--open span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Hero mobile */
    .hero {
        padding: calc(72px + var(--space-xl)) 0 var(--space-xl);
    }

    .hero__title {
        font-size: var(--font-size-3xl);
    }

    .hero__subtitle {
        font-size: var(--font-size-base);
    }

    .hero__stats {
        flex-direction: column;
        gap: var(--space-md);
        margin-top: var(--space-xl);
        padding-top: var(--space-lg);
    }

    /* Grids mobile */
    .services__grid,
    .workshops__grid {
        grid-template-columns: 1fr;
    }

    .experts__grid {
        grid-template-columns: 1fr;
    }

    /* Contact mobile */
    .contact__layout {
        grid-template-columns: 1fr;
    }

    /* Podcast mobile */
    .podcast__layout {
        flex-direction: column;
        text-align: center;
    }

    /* Section headers */
    .section-header__title {
        font-size: var(--font-size-2xl);
    }

    .transformation__title,
    .contact__title,
    .podcast__title,
    .cta-banner__title {
        font-size: var(--font-size-2xl);
    }

    /* Footer mobile */
    .footer__layout {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .footer__links {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: var(--font-size-2xl);
    }

    .hero__ctas {
        flex-direction: column;
    }

    .hero__ctas .btn {
        width: 100%;
    }
}

/* --- Animations --- */
@media (prefers-reduced-motion: no-preference) {
    .service-card,
    .workshop-card,
    .expert-card {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.5s ease, transform 0.5s ease;
    }

    .service-card.animate-in,
    .workshop-card.animate-in,
    .expert-card.animate-in {
        opacity: 1;
        transform: translateY(0);
    }
}