:root {
    --brand-primary: #12366f;
    --brand-secondary: #1f4b94;
    --brand-highlight: #3f6fd7;
    --brand-dark: rgba(5, 12, 28, 0.95);
    --surface-bg: #050b1a;
    --surface-card: #0b162d;
    --surface-elevated: #111f39;
    --surface-border: rgba(60, 88, 140, 0.4);
    --shadow-card: 0 16px 28px rgba(4, 10, 28, 0.35);
    --text-primary: #e5ecff;
    --text-secondary: #bdc8e4;
    --text-muted: #7c8aaf;
    --success: #1ac79b;
    --danger: #ef5a78;
    --transition-base: 0.22s ease;
    --header-height: 78px;
    --section-gap: clamp(1.75rem, 5vw, 3rem);
}
*, *::before, *::after {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
    background: var(--surface-bg);
}
body {
    margin: 0;
    font-family: "Inter", "Segoe UI", Arial, sans-serif;
    background: var(--surface-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overscroll-behavior-y: contain;
    padding-top: calc(var(--header-height) + clamp(1.25rem, 4vw, 2.25rem));
}
body.nav-open {
    overflow: hidden;
}
a {
    color: var(--brand-highlight);
    text-decoration: none;
    transition: color var(--transition-base);
}
a:hover,
a:focus-visible {
    color: var(--brand-secondary);
}
img {
    max-width: 100%;
    display: block;
}
svg {
    display: block;
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.container {
    width: min(1100px, 92vw);
    margin: 0 auto;
}
main.page-content {
    padding: clamp(2.5rem, 6vw, 3.75rem) 0 clamp(3.2rem, 6vw, 4.8rem);
}
.page-section {
    margin-bottom: clamp(2.2rem, 5vw, 3.2rem);
    scroll-margin-top: calc(var(--header-height) + 2rem);
}
.page-section--stack {
    display: grid;
    gap: clamp(1rem, 3vw, 1.6rem);
}
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--brand-dark);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--surface-border);
    box-shadow: 0 14px 32px rgba(2, 8, 24, 0.35);
}
.header-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: clamp(1rem, 3vw, 2.5rem);
    height: var(--header-height);
    padding: 0 clamp(1.25rem, 4vw, 2rem);
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: 0.04em;
    color: var(--text-primary);
}
.logo:hover {
    color: var(--brand-highlight);
}
.site-nav {
    position: absolute;
    top: calc(100% + 0.75rem);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: clamp(0.65rem, 3vw, 1rem);
    padding: clamp(1.05rem, 3vw, 1.6rem);
    border-radius: 18px;
    background: rgba(10, 19, 39, 0.96);
    border: 1px solid var(--surface-border);
    box-shadow: none;
}
.site-nav.is-open {
    display: flex;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    width: 100%;
    font-size: clamp(1rem, 2.4vw, 1.05rem);
    font-weight: 500;
    letter-spacing: 0.02em;
    color: rgba(229, 236, 255, 0.82);
    padding: 0.6rem 0.95rem;
    border: none;
    background: transparent;
    border-radius: 10px;
    text-decoration: none;
    transition: color var(--transition-base), opacity var(--transition-base);
}
.nav-link:hover,
.nav-link:focus-visible {
    color: var(--text-primary);
    outline: none;
}
.site-nav .nav-link.is-active {
    color: var(--brand-highlight);
    font-weight: 600;
    letter-spacing: 0.025em;
}
.nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 42px;
    padding: 0;
    border-radius: 12px;
    border: 1px solid rgba(82, 108, 162, 0.35);
    background: rgba(12, 22, 42, 0.78);
    box-shadow: none;
    cursor: pointer;
    transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}
.nav-toggle:hover {
    transform: translateY(-1px);
    background: rgba(18, 32, 58, 0.88);
    border-color: rgba(82, 108, 162, 0.5);
}
.nav-toggle:focus-visible {
    outline: none;
    transform: translateY(-1px);
    box-shadow: 0 0 0 3px rgba(61, 103, 193, 0.32);
}
.nav-toggle-line {
    display: block;
    width: 26px;
    height: 2px;
    background: rgba(227, 236, 255, 0.9);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav-toggle-line + .nav-toggle-line {
    margin-top: 8px;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
    transform: translateY(10px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(4) {
    transform: translateY(-10px) rotate(-45deg);
}
@media (max-width: 767px) {
    .site-nav {
        border: 1px solid rgba(82, 108, 162, 0.35);
        background: rgba(10, 19, 39, 0.94);
        box-shadow: none;
    }
    .site-nav .nav-link {
        border: none;
        background: transparent;
        padding: 0.55rem 0.25rem;
        font-size: clamp(1rem, 3vw, 1.05rem);
        color: rgba(229, 236, 255, 0.88);
    }
    .site-nav .nav-link:hover,
    .site-nav .nav-link:focus-visible {
        color: var(--text-primary);
    }
    .site-nav .nav-link:active,
    .site-nav .nav-link.is-active {
        color: var(--brand-highlight);
    }
}

@media (min-width: 768px) {
    .site-nav {
        position: static;
        display: flex !important;
        flex-direction: row;
        align-items: center;
        justify-content: flex-end;
        gap: clamp(1rem, 2.6vw, 1.8rem);
        padding: 0;
        border: 0;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
    }
    .nav-link {
        width: auto;
        padding: 0.35rem 0;
    }
    .nav-toggle {
        display: none;
    }
}
@media (max-width: 768px) {
    .site-nav {
        left: clamp(0.75rem, 5vw, 1.5rem);
        right: clamp(0.75rem, 5vw, 1.5rem);
    }
    main.page-content {
        padding: clamp(2.1rem, 6vw, 3rem) 0 clamp(3rem, 9vw, 4.2rem);
    }
}
.section-card {
    display: grid;
    gap: clamp(0.9rem, 2.6vw, 1.4rem);
    background: linear-gradient(180deg, rgba(15, 28, 58, 0.96) 0%, rgba(9, 19, 40, 0.98) 100%);
    border-radius: 24px;
    border: 1px solid var(--surface-border);
    padding: clamp(1.4rem, 3.6vw, 2.25rem);
    box-shadow: var(--shadow-card);
}
.section-card--hero {
    display: grid;
    gap: clamp(1.4rem, 4vw, 2.6rem);
    align-items: center;
}
@media (min-width: 840px) {
    .section-card--hero {
        grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    }
    .hero-content {
        align-items: flex-start;
        text-align: left;
    }
    .hero-content .button {
        align-self: center;
    }
}
.section-card--body {
    gap: clamp(1.1rem, 3vw, 1.65rem);
}
.section-card--content {
    gap: clamp(1rem, 3vw, 1.6rem);
}
.section-card--with-header {
    gap: clamp(1.05rem, 3.2vw, 1.9rem);
}

.section-card-header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-bottom: clamp(0.6rem, 2vw, 0.9rem);
    border-bottom: 1px solid rgba(82, 108, 162, 0.28);
}

.section-card-title {
    position: relative;
    margin: 0;
    display: inline-flex;
    align-items: center;
    font-size: clamp(1.58rem, 3vw, 2.1rem);
    letter-spacing: -0.01em;
    font-weight: 600;
    color: var(--text-primary);
    padding-bottom: clamp(0.35rem, 1vw, 0.5rem);
}

.section-card-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: clamp(3rem, 12vw, 4.5rem);
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(99, 136, 235, 0.9) 0%, rgba(78, 201, 224, 0.9) 100%);
    opacity: 0.85;
}

@media (max-width: 640px) {
    .section-card-header {
        justify-content: center;
    }
    .section-card-title {
        text-align: center;
    }
    .section-card-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

.section-title {
    margin: 0;
    font-size: clamp(1.6rem, 3vw, 2.05rem);
    letter-spacing: -0.01em;
    color: var(--text-primary);
}
.hero-media {
    justify-content: center;
}
.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    align-items: center;
}
.hero-content h1 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: var(--text-primary);
}
.section-lead {
    margin: 0;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    border: 1px solid rgba(61, 103, 214, 0.22);
    background: rgba(61, 103, 214, 0.14);
    color: var(--brand-highlight);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: clamp(0.82rem, 1.7vw, 0.92rem);
    font-weight: 600;
}
.section-intro {
    margin: 0;
    color: var(--text-secondary);
    max-width: 48ch;
}
.profile-portrait {
    border-radius: 24px;
    border: 1px solid rgba(61, 103, 214, 0.22);
    box-shadow: 0 16px 30px rgba(3, 10, 28, 0.28);
}
.section-card p {
    margin: 0;
    color: var(--text-secondary);
}
.section-card p + p {
    margin-top: 0.55rem;
}
.timeline {
    display: grid;
    gap: clamp(1rem, 2.8vw, 1.5rem);
    margin: 0;
    padding: 0;
}
.timeline-item {
    list-style: none;
    padding: clamp(1.15rem, 3.2vw, 1.7rem);
    border: 1px solid rgba(70, 102, 168, 0.35);
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(17, 30, 60, 0.96) 0%, rgba(11, 22, 44, 0.98) 100%);
    box-shadow: 0 12px 24px rgba(3, 10, 28, 0.3);
}
.timeline-item-top {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    margin-bottom: 0.75rem;
}
@media (min-width: 600px) {
    .timeline-item-top {
        flex-direction: row;
        justify-content: space-between;
        align-items: baseline;
    }
}
.timeline-item h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-primary);
}
.timeline-period {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--brand-highlight);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.timeline-item p {
    margin: 0;
    color: var(--text-secondary);
}
.contact-list {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(0.85rem, 3vw, 1.2rem);
    margin: 0;
    padding: 0;
}
.contact-list > li {
    list-style: none;
}
.contact-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(17, 29, 54, 0.88);
    border: 1px solid rgba(70, 102, 168, 0.35);
    border-radius: 18px;
    padding: 0.9rem 1.25rem;
    box-shadow: 0 12px 22px rgba(3, 10, 28, 0.28);
    color: var(--text-primary);
    transition: transform 0.2s ease, box-shadow 0.25s ease, color 0.2s ease, border-color 0.2s ease;
}
.contact-icon:hover,
.contact-icon:focus-visible {
    transform: translateY(-2px);
    border-color: rgba(82, 118, 190, 0.55);
    box-shadow: 0 16px 26px rgba(3, 10, 28, 0.32);
    color: var(--brand-highlight);
}
.contact-icon-figure {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(61, 103, 214, 0.16);
    color: inherit;
}
.contact-icon-figure svg {
    width: 22px;
    height: 22px;
}
.contact-icon--mail .contact-icon-figure {
    background: rgba(63, 111, 215, 0.18);
    color: #3f6fd7;
}
.contact-icon--linkedin .contact-icon-figure {
    background: rgba(10, 102, 194, 0.2);
    color: #0a66c2;
}
.contact-icon--github .contact-icon-figure {
    background: rgba(255, 255, 255, 0.1);
    color: #f5f7ff;
}
.contact-icon--instagram .contact-icon-figure {
    background: linear-gradient(135deg, rgba(195, 42, 163, 0.28), rgba(245, 133, 41, 0.28));
    color: #f874c1;
}
.contact-icon--facebook .contact-icon-figure {
    background: rgba(24, 119, 242, 0.2);
    color: #1877f2;
}
.contact-icon-content {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}
.contact-icon-title {
    font-weight: 600;
}
@media (max-width: 640px) {
    .contact-list {
        flex-direction: column;
        align-items: stretch;
    }
    .contact-icon {
        width: 100%;
        justify-content: flex-start;
    }
}
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.4rem;
    border-radius: 999px;
    border: 1px solid transparent;
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow 0.25s ease;
}
.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 18px 32px rgba(20, 60, 160, 0.35);
}
.button-secondary {
    background: rgba(17, 29, 54, 0.7);
    border: 1px solid rgba(82, 118, 190, 0.45);
    box-shadow: none;
}
.button-secondary:hover,
.button-secondary:focus-visible {
    box-shadow: 0 14px 24px rgba(18, 40, 96, 0.35);
}
.card {
    background: var(--surface-card);
    border-radius: 24px;
    border: 1px solid var(--surface-border);
    padding: clamp(1.6rem, 4vw, 2.4rem);
    box-shadow: var(--shadow-card);
    display: grid;
    gap: clamp(1.1rem, 3vw, 1.6rem);
}
.card-tight {
    padding: clamp(1.25rem, 3vw, 1.8rem);
}
.card + .card {
    margin-top: clamp(1.5rem, 4vw, 2rem);
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.card-header h1,
.card-header h2,
.card-header h3 {
    margin: 0;
}
.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.alert {
    margin: clamp(1rem, 3vw, 1.4rem) 0;
    padding: 0.9rem 1.25rem;
    border-radius: 16px;
    border: 1px solid transparent;
    font-weight: 500;
}
.alert-success {
    border-color: rgba(26, 199, 155, 0.35);
    background: rgba(26, 199, 155, 0.12);
    color: #60f1ca;
}
.alert-error {
    border-color: rgba(239, 90, 120, 0.35);
    background: rgba(239, 90, 120, 0.12);
    color: #ff8ba5;
}
.smart-form {
    display: grid;
    gap: clamp(1rem, 3vw, 1.4rem);
}
.smart-form .form-row {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.smart-form label {
    font-weight: 600;
    color: var(--text-primary);
}
.smart-form input,
.smart-form select {
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    background: rgba(16, 27, 48, 0.8);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color var(--transition-base), box-shadow 0.25s ease;
}
.smart-form input:focus,
.smart-form select:focus {
    outline: none;
    border-color: rgba(82, 118, 190, 0.6);
    box-shadow: 0 0 0 3px rgba(82, 118, 190, 0.25);
}
.smart-form input[type="checkbox"] {
    width: auto;
    accent-color: var(--brand-highlight);
}
.form-actions,
.table-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.75rem;
}
.table-actions {
    margin-top: clamp(1rem, 3vw, 1.4rem);
}
table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface-card);
    border: 1px solid var(--surface-border);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}
table thead {
    background: rgba(61, 103, 214, 0.15);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
}
table th,
table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid rgba(60, 88, 140, 0.28);
    text-align: left;
}
table tr:last-child td {
    border-bottom: none;
}
table.compact th,
table.compact td {
    padding: 0.65rem 0.85rem;
}
table input[type="number"] {
    width: 100%;
    padding: 0.45rem 0.65rem;
    border: 1px solid var(--surface-border);
    border-radius: 10px;
    background: rgba(16, 27, 48, 0.85);
    color: var(--text-primary);
}
table input[type="checkbox"] {
    accent-color: var(--brand-highlight);
}
td.center,
th.center {
    text-align: center;
}
.col-table,
.fert-table,
.result-table {
    background: rgba(11, 22, 44, 0.85);
}
.helper {
    margin: 0 0 0.75rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}
.water-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: clamp(0.75rem, 3vw, 1.1rem);
}
.water-grid label {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding: 0.75rem 0.9rem;
    border-radius: 16px;
    background: rgba(61, 103, 214, 0.08);
    border: 1px solid rgba(61, 103, 214, 0.24);
}
.water-grid span {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--brand-highlight);
}
.site-footer {
    background: transparent;
    color: var(--text-muted);
    padding: 2rem 0 3rem;
    margin-top: clamp(2.5rem, 6vw, 3.5rem);
    border-top: 1px solid var(--surface-border);
    text-align: center;
}
.floating-whatsapp {
    position: fixed;
    right: clamp(1.25rem, 4vw, 2rem);
    bottom: clamp(1.5rem, 4vw, 2.5rem);
    width: 62px;
    height: 62px;
    border-radius: 50%;
    background: linear-gradient(135deg, #43e97b, #0f9db4);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 22px 40px rgba(5, 12, 28, 0.45);
}
.floating-whatsapp svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}
body.nav-open .floating-whatsapp {
    pointer-events: none;
    opacity: 0;
}
@media (max-width: 600px) {
    .hero-content h1 {
        font-size: clamp(1.85rem, 6vw, 2.35rem);
    }
    .timeline-item {
        padding: clamp(1rem, 6vw, 1.3rem);
    }
    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .actions {
        width: 100%;
        justify-content: flex-start;
    }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition: none !important;
    }
}