/* ============================================
   INSTITUTO FEDERICO FROEBEL — Global Styles
   main.css — Base styles + Components
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Nunito:wght@600;700;800&display=swap');
@import url('tokens.css');

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-default);
}

a:hover {
    color: var(--color-primary-dark);
}

ul,
ol {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: var(--weight-bold);
    line-height: var(--leading-tight);
    color: var(--color-text);
}

h1 {
    font-size: var(--text-5xl);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-2xl);
}

h4 {
    font-size: var(--text-xl);
}

p {
    margin-bottom: var(--space-4);
}

/* === LAYOUT === */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-20) 0;
}

.section--alt {
    background-color: var(--color-bg-warm);
}

.grid {
    display: grid;
    gap: var(--space-8);
}

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

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.flex {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.text-center {
    text-align: center;
}

/* === HEADER / NAVBAR === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    transition: box-shadow var(--duration-normal) var(--ease-default);
}

.header--scrolled {
    box-shadow: var(--shadow-md);
}

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

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-heading);
    font-weight: var(--weight-extrabold);
    font-size: var(--text-xl);
    color: var(--color-primary);
}

.header__logo img {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.header__link {
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-text-light);
    transition: color var(--duration-fast) var(--ease-default);
    position: relative;
}

.header__link:hover,
.header__link--active {
    color: var(--color-primary);
}

.header__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width var(--duration-normal) var(--ease-out);
}

.header__link:hover::after,
.header__link--active::after {
    width: 100%;
}

.header__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--color-primary);
    color: var(--color-white) !important;
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    border-radius: var(--radius-full);
    transition: all var(--duration-normal) var(--ease-default);
}

.header__cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-warm);
    color: var(--color-white) !important;
}

/* Mobile menu toggle */
.header__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--space-2);
    background: none;
    border: none;
}

.header__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: var(--radius-full);
    transition: all var(--duration-normal) var(--ease-default);
}

/* === HERO === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-bg) 50%, var(--color-secondary-50) 100%);
}

.hero__bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero__shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
}

.hero__shape--1 {
    width: 400px;
    height: 400px;
    background: var(--color-primary);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.hero__shape--2 {
    width: 300px;
    height: 300px;
    background: var(--color-secondary);
    bottom: -50px;
    left: -80px;
    animation: float 10s ease-in-out infinite reverse;
}

.hero__shape--3 {
    width: 200px;
    height: 200px;
    background: var(--color-accent);
    top: 30%;
    right: 20%;
    animation: float 12s ease-in-out infinite 2s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 640px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary-100);
    color: var(--color-primary-dark);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

.hero__badge svg {
    width: 16px;
    height: 16px;
}

.hero__title {
    font-size: clamp(2.2rem, 5vw, var(--text-6xl));
    font-weight: var(--weight-extrabold);
    margin-bottom: var(--space-6);
    color: var(--color-text);
}

.hero__title span {
    color: var(--color-primary);
}

.hero__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-light);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-8);
    max-width: 520px;
}

.hero__actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero__image {
    position: relative;
    z-index: 2;
}

.hero__image img {
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-default);
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
}

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

.btn--primary:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-warm);
    color: var(--color-white);
}

.btn--secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--secondary:hover {
    background: var(--color-primary-50);
}

.btn--accent {
    background: var(--color-secondary);
    color: var(--color-text);
}

.btn--accent:hover {
    background: var(--color-secondary-dark);
    box-shadow: 0 8px 30px rgba(233, 168, 32, 0.25);
}

.btn--lg {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-lg);
}

.btn--sm {
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-sm);
}

.btn svg,
.btn i {
    width: 18px;
    height: 18px;
}

/* === CARDS === */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border-light);
    transition: all var(--duration-normal) var(--ease-default);
}

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

.card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
    font-size: var(--text-2xl);
}

.card__icon--primary {
    background: var(--color-primary-50);
    color: var(--color-primary);
}

.card__icon--secondary {
    background: var(--color-secondary-50);
    color: var(--color-secondary-dark);
}

.card__icon--accent {
    background: rgba(224, 122, 95, 0.12);
    color: var(--color-accent);
}

.card__icon--nature {
    background: rgba(129, 178, 154, 0.15);
    color: var(--color-nature-dark);
}

.card__title {
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-3);
}

.card__text {
    font-size: var(--text-base);
    color: var(--color-text-light);
    line-height: var(--leading-normal);
}

/* === SECTION HEADERS === */
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto var(--space-12);
}

.section-header__label {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-3);
}

.section-header__title {
    font-size: clamp(1.8rem, 4vw, var(--text-4xl));
    margin-bottom: var(--space-4);
}

.section-header__desc {
    font-size: var(--text-lg);
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* === TESTIMONIALS === */
.testimonial {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-card);
    position: relative;
}

.testimonial::before {
    content: '"';
    position: absolute;
    top: var(--space-4);
    left: var(--space-6);
    font-family: Georgia, serif;
    font-size: 4rem;
    color: var(--color-primary-100);
    line-height: 1;
}

.testimonial__text {
    font-size: var(--text-lg);
    color: var(--color-text);
    line-height: var(--leading-relaxed);
    font-style: italic;
    margin-bottom: var(--space-6);
    padding-top: var(--space-6);
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.testimonial__avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary-50);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    color: var(--color-primary);
}

.testimonial__name {
    font-weight: var(--weight-semibold);
    font-size: var(--text-base);
}

.testimonial__role {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* === STATS === */
.stats {
    display: flex;
    justify-content: center;
    gap: var(--space-16);
    padding: var(--space-12) 0;
}

.stat {
    text-align: center;
}

.stat__number {
    font-family: var(--font-heading);
    font-size: var(--text-5xl);
    font-weight: var(--weight-extrabold);
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--space-2);
}

.stat__label {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    font-weight: var(--weight-medium);
}

/* === CTA BANNER === */
.cta-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-2xl);
    padding: var(--space-16) var(--space-12);
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
}

.cta-banner__title {
    font-size: clamp(1.6rem, 3.5vw, var(--text-4xl));
    color: white;
    margin-bottom: var(--space-4);
    position: relative;
}

.cta-banner__text {
    font-size: var(--text-lg);
    opacity: 0.9;
    margin-bottom: var(--space-8);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.cta-banner .btn--accent {
    position: relative;
}

/* === FOOTER === */
.footer {
    background: var(--color-text);
    color: var(--color-text-muted);
    padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

.footer__brand {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    color: white;
    margin-bottom: var(--space-4);
}

.footer__desc {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.footer__heading {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-5);
}

.footer__link {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    padding: var(--space-1) 0;
    transition: color var(--duration-fast) var(--ease-default);
}

.footer__link:hover {
    color: white;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
}

.footer__social {
    display: flex;
    gap: var(--space-4);
}

.footer__social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: all var(--duration-normal) var(--ease-default);
}

.footer__social a:hover {
    background: var(--color-primary);
    color: white;
}

/* === WHATSAPP FAB === */
.whatsapp-fab {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-fixed);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #25d366;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
    transition: all var(--duration-normal) var(--ease-default);
    cursor: pointer;
}

.whatsapp-fab:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.whatsapp-fab svg {
    width: 30px;
    height: 30px;
    fill: white;
}

/* === ANIMATIONS === */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .stats {
        gap: var(--space-8);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .section {
        padding: var(--space-12) 0;
    }

    .header__nav {
        display: none;
    }

    .header__toggle {
        display: flex;
    }

    /* Mobile nav overlay */
    .header__nav--open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        padding: var(--space-8);
        gap: var(--space-6);
        z-index: var(--z-modal);
        animation: slideDown 0.3s var(--ease-out);
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .header__nav--open .header__link {
        font-size: var(--text-xl);
    }

    .hero {
        min-height: auto;
        padding: calc(72px + var(--space-10)) 0 var(--space-10);
    }

    .hero .container {
        flex-direction: column;
    }

    .hero__title {
        font-size: clamp(1.8rem, 7vw, 2.5rem);
    }

    .hero__actions {
        flex-direction: column;
        width: 100%;
    }

    .hero__actions .btn {
        width: 100%;
        justify-content: center;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .stats {
        flex-direction: column;
        gap: var(--space-6);
    }

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

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .cta-banner {
        padding: var(--space-10) var(--space-6);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 var(--space-4);
    }
}