/* ================================================================
   AMPLIFY SMMA — Portfolio Page
   Inherits design tokens from ../style.css
   Matches the main site visual language exactly.
================================================================ */

/* ================================================================
   SHARED TOKENS (mirrors ../style.css for standalone use)
================================================================ */
:root {
    --color-bg:          #050810;
    --color-surface:     #0d1117;
    --color-surface-2:   #161b22;
    --color-surface-3:   #1f2937;
    --color-border:      rgba(255, 255, 255, 0.07);
    --color-border-2:    rgba(255, 255, 255, 0.12);

    --color-accent:      #22C55E;
    --color-accent-dark: #16A34A;
    --color-accent-dim:  rgba(34, 197, 94, 0.15);
    --color-accent-glow: rgba(34, 197, 94, 0.28);
    --color-gradient:    linear-gradient(135deg, #22C55E 0%, #16A34A 100%);

    --color-text:        #F9FAFB;
    --color-text-muted:  #9CA3AF;
    --color-text-dim:    #6B7280;
    --color-whatsapp:    #25D366;

    --font-body:         'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs:      0.75rem;
    --font-size-sm:      0.875rem;
    --font-size-base:    1rem;
    --font-size-lg:      1.125rem;
    --font-size-xl:      1.25rem;
    --font-size-2xl:     1.5rem;
    --font-size-3xl:     1.875rem;

    --space-2:   0.5rem;
    --space-3:   0.75rem;
    --space-4:   1rem;
    --space-6:   1.5rem;
    --space-8:   2rem;
    --space-12:  3rem;
    --space-16:  4rem;

    --radius-sm:   0.5rem;
    --radius-md:   1rem;
    --radius-lg:   1.5rem;
    --radius-full: 9999px;

    --shadow-md:  0 8px 32px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 40px rgba(34, 197, 94, 0.2);

    --transition-fast:   0.2s ease;
    --transition-base:   0.3s ease;
    --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

    --container-max:  1200px;
    --container-pad:  1.5rem;
    --navbar-height:  4.5rem;
    --z-header: 100;
    --z-menu:   50;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.7;
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
img, iframe     { max-width: 100%; display: block; }
ul              { list-style: none; }
a               { text-decoration: none; color: inherit; }
button          { border: none; background: none; font-family: inherit; cursor: pointer; }

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

/* ================================================================
   UTILITIES
================================================================ */
.gradient-text {
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
}

/* ================================================================
   NAVBAR (matches main site)
================================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-header);
    transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    border-bottom: 1px solid transparent;
    background: rgba(5, 8, 16, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom-color: var(--color-border);
    box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.nav {
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

.logo-img {
    height: 52px;
    width: auto;
    object-fit: contain;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav__link {
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav__link:hover,
.nav__link.active-link {
    color: var(--color-text);
    background: var(--color-surface-2);
}

.nav__link--cta {
    background: var(--color-gradient) !important;
    color: #fff !important;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
}

.nav__toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-sm);
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    cursor: pointer;
    color: var(--color-text);
    font-size: 1.1rem;
}

.nav__close {
    display: none;
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    cursor: pointer;
    z-index: calc(var(--z-menu) + 1);
}

/* Overlay */
.nav__overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: calc(var(--z-menu) - 1);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.nav__overlay.is-visible {
    opacity: 1;
    pointer-events: all;
}

/* ================================================================
   PORTFOLIO HERO
================================================================ */
.portfolio-hero {
    padding-top: calc(var(--navbar-height) + var(--space-16));
    padding-bottom: var(--space-12);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Subtle green glow behind title */
.portfolio-hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34, 197, 94, 0.12), transparent 70%);
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
    filter: blur(60px);
}

.portfolio-hero .section__label {
    display: block;
    margin-bottom: var(--space-4);
}

.portfolio-hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-4);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.portfolio__intro {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    max-width: 600px;
    margin-inline: auto;
    margin-bottom: var(--space-12);
    line-height: 1.75;
}

/* ================================================================
   FILTER CHIPS
================================================================ */
.portfolio__filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.portfolio__item {
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    border: 1px solid var(--color-border-2);
    background: var(--color-surface-2);
    color: var(--color-text-muted);
    transition: color var(--transition-fast), background var(--transition-fast),
                border-color var(--transition-fast), box-shadow var(--transition-fast);
    user-select: none;
}

.portfolio__item:hover {
    color: var(--color-text);
    border-color: var(--color-accent);
}

.portfolio__item.active-filter {
    background: var(--color-gradient);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 0 20px var(--color-accent-glow);
}

/* ================================================================
   GALLERY
================================================================ */
.gallery {
    padding-bottom: 6rem;
}

.gallery__container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

/* ── Image card ────────────────────────────────── */
.gallery__card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base), box-shadow var(--transition-base),
                border-color var(--transition-base);
}

.gallery__card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow), var(--shadow-md);
    border-color: rgba(34, 197, 94, 0.25);
}

.gallery__img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: transform 0.6s ease, filter 0.4s ease;
    filter: brightness(0.88);
}

.gallery__card:hover .gallery__img {
    transform: scale(1.06);
    filter: brightness(0.6);
}

/* Overlay on image cards */
.gallery__overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-6);
    background: linear-gradient(to top, rgba(5, 8, 16, 0.95) 0%, transparent 60%);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.gallery__card:hover .gallery__overlay {
    opacity: 1;
    transform: translateY(0);
}

.gallery__overlay h3,
.gallery__info h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

.gallery__overlay p,
.gallery__info p {
    font-size: var(--font-size-sm);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    margin-top: var(--space-2);
}

/* ── Video card ────────────────────────────────── */
.gallery__card.video {
    display: flex;
    flex-direction: column;
}

.video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: var(--color-bg);
    flex-shrink: 0;
}

.video-wrapper.vertical {
    aspect-ratio: 9 / 16;
    max-height: 500px;
}

.video-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.gallery__info {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-border);
    background: var(--color-surface-3);
}

/* ================================================================
   STICKY WHATSAPP BUTTON
================================================================ */
.sticky-whatsapp-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 200;
    display: flex;
    align-items: center;
    text-decoration: none;
    border-radius: var(--radius-full);
    overflow: hidden;
}

.btn-glow {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: rgba(37, 211, 102, 0.4);
    filter: blur(12px);
    animation: whatsappPulse 2.5s ease-in-out infinite;
}

@keyframes whatsappPulse {
    0%, 100% { transform: scale(1);    opacity: 0.5; }
    50%       { transform: scale(1.25); opacity: 0.2; }
}

.btn-content {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--color-whatsapp);
    color: #fff;
    padding: 0.85rem 1.4rem;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: 600;
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4);
    transition: transform var(--transition-spring), box-shadow var(--transition-base);
}

.sticky-whatsapp-btn:hover .btn-content {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(37, 211, 102, 0.55);
}

.btn-content i {
    font-size: 1.3rem;
}

/* ================================================================
   FOOTER
================================================================ */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-8);
    text-align: center;
}

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

.footer__socials {
    display: flex;
    gap: var(--space-3);
}

.footer__socials a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--color-text-dim);
    transition: color var(--transition-fast), background var(--transition-fast),
                transform var(--transition-spring);
}

.footer__socials a:hover {
    color: var(--color-accent);
    background: var(--color-accent-dim);
    border-color: rgba(34, 197, 94, 0.3);
    transform: translateY(-3px);
}

.footer__copy {
    font-size: var(--font-size-xs);
    color: var(--color-text-dim);
}

/* ================================================================
   REVEAL ANIMATION
================================================================ */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    transition-delay: var(--delay, 0s);
}

.reveal-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ================================================================
   GALLERY FILTER: hidden state
================================================================ */
.gallery__card.hidden {
    display: none;
}

/* ================================================================
   RESPONSIVE
================================================================ */
@media screen and (max-width: 1024px) {
    .gallery__container {
        grid-template-columns: 1fr 1fr;
    }
}

@media screen and (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(320px, 85vw);
        height: 100vh;
        background: var(--color-surface);
        border-left: 1px solid var(--color-border);
        padding: calc(var(--navbar-height) + 2rem) 1.5rem 2rem;
        transition: right 0.5s ease;
        z-index: var(--z-menu);
        overflow-y: auto;
    }

    .nav__menu.is-open { right: 0; }

    .nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-2);
    }

    .nav__link {
        display: block;
        padding: 0.75rem 1rem;
        font-size: var(--font-size-base);
    }

    .nav__toggle { display: flex; }
    .nav__close  { display: flex; }

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

    .video-wrapper.vertical {
        max-height: 380px;
    }
}

@media screen and (max-width: 480px) {
    .sticky-whatsapp-btn .btn-content span {
        display: none;
    }

    .btn-content {
        padding: 0.85rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .reveal-up { opacity: 1; transform: none; }
}