/* =====================================================================
   Encuentro Ellucian México · 12 de mayo · ITAM
   Brand: Ellucian Purple Energético
   ===================================================================== */

:root {
    --c-primary: #5C2D91;
    --c-primary-dark: #401F66;
    --c-secondary: #8B5CF6;
    --c-accent: #00B5E2;
    --c-bg: #FFFFFF;
    --c-bg-soft: #F8F5FC;
    --c-text: #0F0B1F;
    --c-text-soft: #4B4565;
    --c-border: rgba(15, 11, 31, 0.08);

    --grad-primary: linear-gradient(135deg, #5C2D91 0%, #8B5CF6 100%);
    --grad-hero: linear-gradient(135deg, rgba(64, 31, 102, 0.88) 0%, rgba(15, 11, 31, 0.72) 100%);
    --grad-soft: linear-gradient(180deg, #F8F5FC 0%, #FFFFFF 100%);

    --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;

    --shadow-sm: 0 2px 8px rgba(15, 11, 31, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 11, 31, 0.08);
    --shadow-lg: 0 24px 48px rgba(92, 45, 145, 0.16);
    --shadow-glow: 0 0 32px rgba(139, 92, 246, 0.32);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --transition: 0.4s var(--ease);
}

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

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

body {
    font-family: var(--font-body);
    color: var(--c-text);
    background: var(--c-bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--c-primary);
    text-decoration: none;
    transition: color var(--transition);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

::selection {
    background: var(--c-secondary);
    color: #fff;
}

/* =====================================================================
   Buttons
   ===================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.01em;
    border-radius: 999px;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--grad-primary);
    color: #fff;
    box-shadow: 0 8px 24px rgba(92, 45, 145, 0.32);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #6B35A8 0%, #A878F8 100%);
    opacity: 0;
    transition: opacity var(--transition);
}

.btn-primary > * {
    position: relative;
    z-index: 1;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(92, 45, 145, 0.42);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-2px);
}

/* =====================================================================
   Navigation
   ===================================================================== */

#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: var(--c-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 14px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.nav-logo img {
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--c-text);
    font-size: 14px;
    font-weight: 500;
    position: relative;
    padding: 8px 0;
}

.nav-links a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--grad-primary);
    transition: width var(--transition);
}

.nav-links a:not(.nav-cta):hover::after {
    width: 100%;
}

.nav-links a:hover {
    color: var(--c-primary);
}

.nav-cta {
    background: var(--grad-primary);
    color: #fff !important;
    padding: 10px 22px !important;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(92, 45, 145, 0.3);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(92, 45, 145, 0.42);
    color: #fff !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--c-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* =====================================================================
   Mobile menu
   ===================================================================== */

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 99;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease);
}

.mobile-menu.is-open {
    pointer-events: auto;
    opacity: 1;
    visibility: visible;
}

.mobile-menu__bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, #401F66 0%, #5C2D91 50%, #0F0B1F 100%);
}

.mobile-menu__content {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 18px 28px;
    color: #fff;
}

.mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 0 32px;
}

.mobile-menu__header .nav-logo img {
    height: 28px;
    filter: brightness(0) invert(1);
}

.mobile-menu__close {
    width: 40px;
    height: 40px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.mobile-menu__close span {
    position: absolute;
    width: 18px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
}

.mobile-menu__close span:first-child {
    transform: rotate(45deg);
}

.mobile-menu__close span:last-child {
    transform: rotate(-45deg);
}

.mobile-menu__nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
}

.mobile-menu__link {
    color: #fff;
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 600;
    padding: 16px 0;
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(20px);
    opacity: 0;
}

.mobile-menu.is-open .mobile-menu__link {
    transform: translateY(0);
    opacity: 1;
    transition: transform 0.6s var(--ease), opacity 0.6s var(--ease);
    transition-delay: calc(var(--i, 0) * 0.06s + 0.15s);
}

.mobile-menu__link[data-index="0"] { --i: 0; }
.mobile-menu__link[data-index="1"] { --i: 1; }
.mobile-menu__link[data-index="2"] { --i: 2; }
.mobile-menu__link[data-index="3"] { --i: 3; }
.mobile-menu__link[data-index="4"] { --i: 4; }
.mobile-menu__link[data-index="5"] { --i: 5; }

.mobile-menu__link--cta {
    color: var(--c-accent);
}

.mobile-menu__footer {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    padding-top: 16px;
}

.mobile-menu__footer p {
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
}

/* =====================================================================
   Hero
   ===================================================================== */

#hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    padding: 120px 28px 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #fff;
    overflow: hidden;
    isolation: isolate;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url('/img/ellucian/bg-itam.jpg') center/cover no-repeat;
    z-index: -3;
    transform: scale(1.06);
    will-change: transform;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: var(--grad-hero);
    z-index: -2;
}

#hero-particles {
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: 0.6;
    pointer-events: none;
}

.hero-content {
    max-width: 920px;
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 999px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 28px;
}

.hero-pulse {
    width: 8px;
    height: 8px;
    background: var(--c-accent);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(0, 181, 226, 0.6);
    animation: pulse 2.4s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 181, 226, 0.6); }
    70% { box-shadow: 0 0 0 12px rgba(0, 181, 226, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 181, 226, 0); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 6.4vw, 76px);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
    text-wrap: balance;
}

.hero-title-accent {
    background: linear-gradient(135deg, #C4B5FD 0%, #00B5E2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(15px, 1.6vw, 18px);
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.86);
    max-width: 720px;
    margin: 0 auto 36px;
    text-wrap: pretty;
}

.hero-subtitle strong {
    color: #fff;
    font-weight: 600;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 28px;
    margin-bottom: 36px;
}

.hero-meta__item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-md);
    padding: 12px 20px;
    text-align: left;
}

.hero-meta__item svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    color: var(--c-accent);
}

.hero-meta__label {
    display: block;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.6);
}

.hero-meta__value {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
}

.hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

/* Countdown */
.countdown-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.countdown-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.countdown-box {
    min-width: 80px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 600;
    text-align: center;
    color: #fff;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.countdown-label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.66);
}

.countdown-separator {
    font-family: var(--font-display);
    font-size: 28px;
    color: rgba(255, 255, 255, 0.32);
    margin: 0 -4px;
    align-self: flex-start;
    padding-top: 18px;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 56px;
    overflow: hidden;
    z-index: 1;
    cursor: pointer;
}

.hero-scroll-indicator .scroll-line {
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.7));
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

/* =====================================================================
   Sections
   ===================================================================== */

section {
    position: relative;
}

#about,
#agenda,
#speakers {
    background: var(--c-bg);
    padding: 110px 28px;
}

#audience,
#registro {
    background: var(--c-bg-soft);
    padding: 110px 28px;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-secondary);
    background: rgba(139, 92, 246, 0.1);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(30px, 4.4vw, 48px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--c-text);
    margin-bottom: 20px;
    text-wrap: balance;
}

.gradient-line {
    width: 56px;
    height: 3px;
    background: var(--grad-primary);
    margin: 0 auto 20px;
    border-radius: 999px;
}

.section-description {
    font-size: 17px;
    line-height: 1.7;
    color: var(--c-text-soft);
    text-wrap: pretty;
}

/* =====================================================================
   About
   ===================================================================== */

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-text p {
    font-size: 17px;
    line-height: 1.75;
    color: var(--c-text-soft);
    margin-bottom: 18px;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-text strong {
    color: var(--c-text);
    font-weight: 600;
}

.about-visual {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #F8F5FC 0%, #E9E0FA 100%);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.about-visual__orb {
    position: absolute;
    width: 70%;
    aspect-ratio: 1;
    top: 15%;
    left: 15%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.5) 0%, rgba(0, 181, 226, 0.18) 50%, transparent 75%);
    border-radius: 50%;
    filter: blur(20px);
    animation: orbFloat 8s ease-in-out infinite;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-6%, 4%) scale(1.05); }
}

.about-visual__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(92, 45, 145, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(92, 45, 145, 0.06) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.about-visual__pill {
    position: absolute;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(92, 45, 145, 0.12);
    color: var(--c-primary);
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 999px;
    box-shadow: var(--shadow-sm);
    animation: pillFloat 6s ease-in-out infinite;
}

.about-visual__pill--1 { top: 18%; left: 10%; animation-delay: 0s; }
.about-visual__pill--2 { top: 24%; right: 12%; animation-delay: -1.5s; }
.about-visual__pill--3 { bottom: 24%; left: 14%; animation-delay: -3s; }
.about-visual__pill--4 { bottom: 18%; right: 10%; animation-delay: -4.5s; }

@keyframes pillFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* =====================================================================
   Audience
   ===================================================================== */

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.audience-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    text-align: left;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
}

.audience-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--grad-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.audience-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(139, 92, 246, 0.3);
}

.audience-card:hover::before {
    transform: scaleX(1);
}

.audience-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--grad-primary);
    color: #fff;
    margin-bottom: 18px;
    box-shadow: 0 8px 20px rgba(92, 45, 145, 0.32);
}

.audience-card__icon svg {
    width: 28px;
    height: 28px;
}

.audience-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--c-text);
    margin-bottom: 6px;
}

.audience-card p {
    font-size: 14px;
    color: var(--c-text-soft);
}

/* =====================================================================
   Agenda timeline
   ===================================================================== */

.timeline {
    list-style: none;
    max-width: 880px;
    margin: 0 auto;
    position: relative;
    padding-left: 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 165px;
    top: 12px;
    bottom: 12px;
    width: 2px;
    background: linear-gradient(180deg, var(--c-secondary) 0%, var(--c-accent) 100%);
    opacity: 0.18;
}

.timeline__item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 32px;
    align-items: start;
    margin-bottom: 18px;
    position: relative;
}

.timeline__item::before {
    content: '';
    position: absolute;
    left: 159px;
    top: 22px;
    width: 14px;
    height: 14px;
    background: #fff;
    border: 3px solid var(--c-primary);
    border-radius: 50%;
    z-index: 1;
    transition: all var(--transition);
}

.timeline__item:hover::before {
    background: var(--c-secondary);
    border-color: var(--c-accent);
    transform: scale(1.2);
    box-shadow: 0 0 0 6px rgba(139, 92, 246, 0.16);
}

.timeline__time {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary);
    text-align: right;
    padding-top: 18px;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.timeline__card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 18px 24px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.timeline__card:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(139, 92, 246, 0.25);
}

.timeline__card h3 {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 4px;
    line-height: 1.3;
}

.timeline__card p {
    font-size: 14px;
    color: var(--c-text-soft);
    line-height: 1.5;
}

.timeline__card--highlight {
    background: linear-gradient(135deg, #5C2D91 0%, #8B5CF6 100%);
    border: none;
    box-shadow: 0 12px 28px rgba(92, 45, 145, 0.28);
}

.timeline__card--highlight h3,
.timeline__card--highlight p {
    color: #fff;
}

.timeline__card--highlight p {
    color: rgba(255, 255, 255, 0.85);
}

.timeline__card--break {
    background: var(--c-bg-soft);
    border-style: dashed;
    border-color: rgba(139, 92, 246, 0.3);
}

/* =====================================================================
   Speakers
   ===================================================================== */

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 28px;
    max-width: 1100px;
    margin: 0 auto;
}

.speaker-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
}

.speaker-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(139, 92, 246, 0.32);
}

.speaker-card__avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 20px;
    background: var(--grad-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-family: var(--font-display);
    font-size: 38px;
    font-weight: 600;
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
    box-shadow: 0 12px 24px rgba(92, 45, 145, 0.28);
    transition: box-shadow var(--transition);
}

.speaker-card:hover .speaker-card__avatar {
    box-shadow: 0 16px 36px rgba(92, 45, 145, 0.42), 0 0 0 4px rgba(139, 92, 246, 0.18);
}

.speaker-card__avatar::after {
    content: attr(data-initials);
}

.speaker-card__avatar img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.speaker-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 6px;
    line-height: 1.3;
}

.speaker-card__role {
    font-size: 13px;
    color: var(--c-text-soft);
    line-height: 1.4;
    margin-bottom: 4px;
}

.speaker-card__org {
    font-size: 13px;
    font-weight: 600;
    color: var(--c-primary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* =====================================================================
   Form
   ===================================================================== */

.form-wrapper {
    max-width: 720px;
    margin: 0 auto;
}

.form-glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow:
        0 24px 60px rgba(92, 45, 145, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-field {
    margin-bottom: 22px;
    position: relative;
}

.form-field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 8px;
    letter-spacing: 0.01em;
}

.req {
    color: #DC2626;
    margin-left: 2px;
}

.form-optional {
    color: var(--c-text-soft);
    font-weight: 400;
    font-size: 12px;
}

.form-field input,
.form-field select,
.form-field textarea {
    width: 100%;
    padding: 13px 16px;
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--c-text);
    background: #fff;
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.form-field textarea {
    resize: vertical;
    min-height: 80px;
    font-family: var(--font-body);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--c-secondary);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.16);
}

.form-field input.is-prefilled,
.form-field select.is-prefilled {
    background: rgba(0, 181, 226, 0.06);
    border-color: rgba(0, 181, 226, 0.4);
}

.form-field input.is-error,
.form-field select.is-error,
.form-field textarea.is-error {
    border-color: #DC2626;
    box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.1);
}

.form-error {
    display: block;
    font-size: 12px;
    color: #DC2626;
    margin-top: 6px;
    min-height: 1em;
    font-weight: 500;
}

.form-hint {
    display: block;
    font-size: 12px;
    color: var(--c-accent);
    margin-top: 6px;
    font-weight: 500;
}

.form-hint.is-warning {
    color: #DC2626;
}

.form-hint.is-success {
    color: #16A34A;
}

.form-phone {
    display: flex;
    align-items: stretch;
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius-sm);
    background: #fff;
    transition: border-color var(--transition), box-shadow var(--transition);
    overflow: hidden;
}

.form-phone:focus-within {
    border-color: var(--c-secondary);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.16);
}

.form-phone__prefix {
    padding: 13px 14px;
    background: var(--c-bg-soft);
    color: var(--c-primary);
    font-weight: 600;
    font-size: 15px;
    border-right: 1px solid var(--c-border);
    user-select: none;
}

.form-phone input {
    flex: 1;
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
}

.form-checkbox {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px;
    align-items: start;
    padding: 16px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--c-primary);
    cursor: pointer;
}

.form-checkbox label {
    margin-bottom: 0;
    font-size: 13px;
    line-height: 1.5;
    font-weight: 400;
    color: var(--c-text-soft);
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    padding: 16px 28px;
    font-size: 16px;
    margin-top: 8px;
    position: relative;
}

.btn-submit .btn-spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.btn-submit.is-loading .btn-spinner {
    display: inline-block;
}

.btn-submit.is-loading .btn-label {
    opacity: 0.5;
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.form-legal {
    font-size: 12px;
    color: var(--c-text-soft);
    text-align: center;
    margin-top: 16px;
    line-height: 1.5;
}

.form-legal a {
    color: var(--c-primary);
    text-decoration: underline;
}

.form-feedback {
    margin-top: 16px;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    line-height: 1.5;
    display: none;
}

.form-feedback.is-error {
    display: block;
    background: rgba(220, 38, 38, 0.08);
    border: 1px solid rgba(220, 38, 38, 0.24);
    color: #991B1B;
}

.form-feedback.is-success {
    display: block;
    background: rgba(22, 163, 74, 0.08);
    border: 1px solid rgba(22, 163, 74, 0.24);
    color: #166534;
}

/* =====================================================================
   Modal
   ===================================================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(15, 11, 31, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}

.modal-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    max-width: 460px;
    width: 100%;
    text-align: center;
    position: relative;
    box-shadow: 0 32px 80px rgba(15, 11, 31, 0.3);
    transform: translateY(24px) scale(0.96);
    transition: transform var(--transition);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.is-open .modal-content {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--c-bg-soft);
    color: var(--c-text);
    font-size: 22px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.modal-close:hover {
    background: rgba(139, 92, 246, 0.16);
}

.modal-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--grad-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 28px rgba(92, 45, 145, 0.36);
}

.modal-icon svg {
    width: 36px;
    height: 36px;
}

.modal-content h2 {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 10px;
}

.modal-content > p {
    font-size: 15px;
    color: var(--c-text-soft);
    margin-bottom: 20px;
}

.modal-qr {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 16px;
    margin: 0 auto 24px;
    width: fit-content;
    box-shadow: var(--shadow-sm);
}

.modal-qr img {
    width: 200px;
    height: 200px;
    display: block;
}

.modal-codigo-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--c-text-soft);
    margin-bottom: 4px;
    font-weight: 600;
}

.modal-codigo {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--c-primary);
    letter-spacing: 0.18em;
    margin-bottom: 20px;
}

.modal-email-note {
    font-size: 13px;
    color: var(--c-text-soft);
    line-height: 1.6;
    margin-bottom: 24px;
}

.modal-close-btn {
    width: 100%;
}

/* =====================================================================
   Toast
   ===================================================================== */

.toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--c-text);
    color: #fff;
    padding: 14px 22px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 300;
    max-width: 90%;
    text-align: center;
}

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

.toast.is-error {
    background: #991B1B;
}

.toast.is-success {
    background: #166534;
}

/* =====================================================================
   Footer
   ===================================================================== */

#footer {
    background: var(--c-text);
    color: rgba(255, 255, 255, 0.86);
    padding: 56px 28px 32px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.footer-logo {
    height: 32px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin-bottom: 24px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-legal a:hover {
    color: #fff;
}

/* =====================================================================
   Animations
   ===================================================================== */

.animate-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
    will-change: opacity, transform;
}

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

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .animate-in { opacity: 1; transform: none; }
    html { scroll-behavior: auto; }
}

/* =====================================================================
   Responsive
   ===================================================================== */

@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-visual { max-width: 480px; margin: 0 auto; }
    #about, #agenda, #speakers, #audience, #registro { padding: 90px 24px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: flex; }

    .hero-meta { gap: 12px; }
    .hero-meta__item { flex: 1 1 100%; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }

    .countdown-box { min-width: 60px; padding: 10px 12px; font-size: 24px; }
    .countdown-label { font-size: 10px; }
    .countdown-separator { display: none; }
    .countdown-container { gap: 8px; }

    .form-row { grid-template-columns: 1fr; gap: 0; }
    .form-glass { padding: 28px 22px; }

    .timeline::before { left: 8px; }
    .timeline__item { grid-template-columns: 1fr; gap: 8px; padding-left: 32px; }
    .timeline__item::before { left: 1px; top: 6px; }
    .timeline__time { text-align: left; padding-top: 0; }

    .footer-bottom { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
    .nav-container { padding: 12px 18px; }
    #hero { padding: 100px 20px 64px; }
    .hero-eyebrow { font-size: 11px; padding: 6px 12px; }
    .form-glass { padding: 22px 18px; }
    .modal-content { padding: 32px 22px; }
    .modal-codigo { font-size: 26px; }
}