/* =============================================
   KIRK ALLEN PHOTOGRAPHY — STYLESHEET
   Aesthetic: Refined editorial minimalism
   Inspired by: philnguyen.co, scottmathewsphotography.com, alijabos.com
   ============================================= */

/* ----- CSS VARIABLES ----- */
:root {
    /* Palette: Warm neutrals with deep contrast */
    --color-bg:        #f5f2ee;
    --color-bg-alt:    #eae6e0;
    --color-surface:   #ffffff;
    --color-ink:       #1a1714;
    --color-ink-soft:  #6b6560;
    --color-ink-muted: #9e9891;
    --color-accent:    #8b7355;
    --color-accent-hover: #6d5a44;
    --color-border:    #d5cfc8;
    --color-hero-overlay: rgba(18, 16, 12, 0.35);

    /* Typography */
    --font-display: 'Cormorant Garamond', 'Georgia', serif;
    --font-body:    'Manrope', 'Helvetica Neue', sans-serif;

    /* Spacing scale */
    --space-xs:  0.5rem;
    --space-sm:  1rem;
    --space-md:  2rem;
    --space-lg:  4rem;
    --space-xl:  6rem;
    --space-2xl: 10rem;

    /* Timing */
    --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration:  0.6s;

    /* Layout */
    --header-h: 72px;
    --max-width: 1400px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 300;
    color: var(--color-ink);
    background: var(--color-bg);
    line-height: 1.7;
    letter-spacing: 0.01em;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

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

ul { list-style: none; }

::selection {
    background: var(--color-accent);
    color: var(--color-surface);
}

/* ----- UTILITY ----- */
.section-title {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(2.4rem, 5vw, 4.5rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

/* ----- LOADER ----- */
.loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--color-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s var(--ease-out), visibility 0.5s;
}

.loader.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader__inner {
    text-align: center;
}

.loader__text {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--color-bg);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 1.5rem;
}

.loader__bar {
    width: 120px;
    height: 1px;
    background: rgba(245, 242, 238, 0.2);
    margin: 0 auto;
    overflow: hidden;
}

.loader__bar-fill {
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    transform-origin: left;
    animation: loaderFill 1.6s var(--ease-in-out) forwards;
}

@keyframes loaderFill {
    from { transform: scaleX(0); }
    to   { transform: scaleX(1); }
}

/* ----- HEADER ----- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-h);
    transition: background 0.4s, box-shadow 0.4s, backdrop-filter 0.4s;
}

.header.is-scrolled {
    background: rgba(245, 242, 238, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--color-border);
}

.header__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-md);
}

.header__logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: opacity 0.3s;
}

.header__logo:hover { opacity: 0.6; }

.header__logo-dot {
    color: var(--color-accent);
}

.header__nav-list {
    display: flex;
    gap: var(--space-lg);
}

.header__nav-link {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    position: relative;
    padding: 4px 0;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.4s var(--ease-out);
}

.header__nav-link:hover::after { width: 100%; }

/* Hamburger */
.header__menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 28px;
    padding: 4px 0;
    z-index: 110;
}

.header__menu-line {
    display: block;
    width: 100%;
    height: 1px;
    background: var(--color-ink);
    transition: transform 0.4s var(--ease-out), opacity 0.3s;
}

.header__menu-btn.is-active .header__menu-line:first-child {
    transform: translateY(3.5px) rotate(45deg);
}

.header__menu-btn.is-active .header__menu-line:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 105;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s var(--ease-out), visibility 0.5s;
}

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

.mobile-menu__link {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 300;
    display: block;
    padding: 0.3em 0;
    transform: translateY(20px);
    opacity: 0;
    transition: transform 0.5s var(--ease-out), opacity 0.5s, color 0.3s;
}

.mobile-menu.is-open .mobile-menu__link {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu.is-open .mobile-menu__link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.is-open .mobile-menu__link:nth-child(2) { transition-delay: 0.2s; }
.mobile-menu.is-open .mobile-menu__link:nth-child(3) { transition-delay: 0.3s; }

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

.mobile-menu__footer {
    position: absolute;
    bottom: var(--space-lg);
}

.mobile-menu__email {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
    transition: color 0.3s;
}

.mobile-menu__email:hover { color: var(--color-accent); }

/* ----- HERO ----- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__image-wrap {
    position: absolute;
    inset: 0;
}

.hero__image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    /* Fallback gradient until Drive image loads */
    background-image: linear-gradient(135deg, #c9bfb0 0%, #8b7355 50%, #4a3f33 100%);
    transform: scale(1.05);
    animation: heroZoom 20s var(--ease-in-out) forwards;
}

@keyframes heroZoom {
    to { transform: scale(1); }
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: var(--color-hero-overlay);
}

.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-bg);
    padding: 0 var(--space-md);
}

.hero__eyebrow {
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    color: rgba(245, 242, 238, 0.7);
}

.hero__title {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(3rem, 8vw, 7rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
}

.hero__title span {
    display: block;
}

.hero__line {
    width: 60px;
    height: 1px;
    background: var(--color-accent);
    margin: var(--space-md) auto;
}

.hero__subtitle {
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(245, 242, 238, 0.7);
}

/* Reveal animation */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    animation: revealUp 0.8s var(--ease-out) forwards;
}

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

/* Scroll indicator */
.hero__scroll {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(245, 242, 238, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    transition: color 0.3s;
}

.hero__scroll:hover { color: var(--color-bg); }

.hero__scroll-text {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.hero__scroll-arrow {
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(6px); }
}

/* ----- PORTFOLIO ----- */
.portfolio {
    padding: var(--space-2xl) var(--space-md) var(--space-xl);
    max-width: var(--max-width);
    margin: 0 auto;
}

.portfolio__header {
    margin-bottom: var(--space-lg);
}

.portfolio__label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.portfolio__label-num {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    font-weight: 500;
}

.portfolio__label-text {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
}

/* Filters */
.portfolio__filters {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.portfolio__filter {
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.6em 1.4em;
    border: 1px solid var(--color-border);
    border-radius: 0;
    background: transparent;
    color: var(--color-ink-soft);
    transition: all 0.35s var(--ease-out);
}

.portfolio__filter:hover {
    border-color: var(--color-ink);
    color: var(--color-ink);
}

.portfolio__filter.active {
    background: var(--color-ink);
    border-color: var(--color-ink);
    color: var(--color-bg);
}

/* Gallery Grid */
.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s var(--ease-out) forwards;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s var(--ease-out);
}

.gallery-item:hover img {
    transform: scale(1.04);
}

.gallery-item__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26, 23, 20, 0.5) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s;
}

.gallery-item:hover .gallery-item__overlay {
    opacity: 1;
}

.gallery-item__label {
    position: absolute;
    bottom: var(--space-sm);
    left: var(--space-sm);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(245, 242, 238, 0.85);
    transform: translateY(8px);
    opacity: 0;
    transition: all 0.4s var(--ease-out);
}

.gallery-item:hover .gallery-item__label {
    transform: translateY(0);
    opacity: 1;
}

/* Stagger animation */
.gallery-item:nth-child(1)  { animation-delay: 0.0s; }
.gallery-item:nth-child(2)  { animation-delay: 0.06s; }
.gallery-item:nth-child(3)  { animation-delay: 0.12s; }
.gallery-item:nth-child(4)  { animation-delay: 0.18s; }
.gallery-item:nth-child(5)  { animation-delay: 0.24s; }
.gallery-item:nth-child(6)  { animation-delay: 0.30s; }
.gallery-item:nth-child(7)  { animation-delay: 0.36s; }
.gallery-item:nth-child(8)  { animation-delay: 0.42s; }
.gallery-item:nth-child(9)  { animation-delay: 0.48s; }
.gallery-item:nth-child(10) { animation-delay: 0.54s; }
.gallery-item:nth-child(11) { animation-delay: 0.60s; }
.gallery-item:nth-child(12) { animation-delay: 0.66s; }

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

/* Gallery item hide/show for filter */
.gallery-item.is-hidden {
    display: none;
}

/* Loading / Error */
.portfolio__loading {
    text-align: center;
    padding: var(--space-xl) 0;
    color: var(--color-ink-muted);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.portfolio__loading.is-hidden { display: none; }

.portfolio__spinner {
    width: 28px;
    height: 28px;
    border: 1.5px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    margin: 0 auto var(--space-sm);
    animation: spin 0.8s linear infinite;
}

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

.portfolio__error {
    text-align: center;
    padding: var(--space-xl) 0;
    color: var(--color-ink-soft);
}

/* ----- ABOUT ----- */
.about {
    padding: var(--space-xl) var(--space-md) var(--space-2xl);
    background: var(--color-bg-alt);
}

.about__inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

.about__text {
    max-width: 520px;
}

.about__text p {
    margin-bottom: var(--space-sm);
    color: var(--color-ink-soft);
    font-size: 0.95rem;
}

.about__stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding-top: var(--space-sm);
}

.about__stat {
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
}

.about__stat-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--color-accent);
    min-width: 100px;
}

.about__stat-label {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
}

/* ----- CONTACT ----- */
.contact {
    padding: var(--space-2xl) var(--space-md);
    max-width: var(--max-width);
    margin: 0 auto;
}

.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

/* Form */
.contact__form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1.2rem 0 0.6rem;
    border: none;
    border-bottom: 1px solid var(--color-border);
    background: transparent;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--color-ink);
    outline: none;
    transition: border-color 0.3s;
    border-radius: 0;
    -webkit-appearance: none;
}

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

.form-group select {
    cursor: pointer;
}

.form-group label {
    position: absolute;
    top: 1.2rem;
    left: 0;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
    pointer-events: none;
    transition: all 0.3s var(--ease-out);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label,
.form-group select:focus ~ label,
.form-group select:valid ~ label {
    top: 0;
    font-size: 0.6rem;
    color: var(--color-accent);
}

.form-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.4s var(--ease-out);
}

.form-group input:focus ~ .form-line,
.form-group textarea:focus ~ .form-line,
.form-group select:focus ~ .form-line {
    width: 100%;
}

/* Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 1em 2.5em;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: all 0.35s var(--ease-out);
    min-width: 180px;
}

.btn--primary {
    background: var(--color-ink);
    color: var(--color-bg);
    border: 1px solid var(--color-ink);
}

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

.btn--outline {
    background: transparent;
    color: var(--color-ink);
    border: 1px solid var(--color-border);
}

.btn--outline:hover {
    border-color: var(--color-ink);
}

.contact__status {
    font-size: 0.8rem;
    min-height: 1.5em;
}

.contact__status.is-success { color: #4a7c59; }
.contact__status.is-error   { color: #9c4040; }

/* ----- FOOTER ----- */
.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-lg) var(--space-md);
    background: var(--color-bg-alt);
}

.footer__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer__brand {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.footer__logo {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer__copy {
    font-size: 0.68rem;
    color: var(--color-ink-muted);
    letter-spacing: 0.03em;
}

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

.footer__links a {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
    transition: color 0.3s;
}

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

/* ----- LIGHTBOX ----- */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(18, 16, 12, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s var(--ease-out);
}

.lightbox.is-open {
    opacity: 1;
}

.lightbox__close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    font-size: 2rem;
    color: rgba(245, 242, 238, 0.6);
    transition: color 0.3s;
    z-index: 2;
    line-height: 1;
}

.lightbox__close:hover { color: var(--color-bg); }

.lightbox__prev,
.lightbox__next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(245, 242, 238, 0.5);
    transition: color 0.3s;
    padding: var(--space-sm);
    z-index: 2;
}

.lightbox__prev { left: var(--space-sm); }
.lightbox__next { right: var(--space-sm); }
.lightbox__prev:hover,
.lightbox__next:hover { color: var(--color-bg); }

.lightbox__image-wrap {
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox__image {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 0;
}

.lightbox__caption {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(245, 242, 238, 0.5);
}

.lightbox__counter {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    font-size: 0.7rem;
    color: rgba(245, 242, 238, 0.35);
    letter-spacing: 0.05em;
}

/* ----- SCROLL REVEAL (JS driven) ----- */
.sr {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

/* ----- RESPONSIVE ----- */
@media (max-width: 1024px) {
    .about__content,
    .contact__content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

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

@media (max-width: 768px) {
    :root {
        --header-h: 60px;
    }

    .header__nav { display: none; }
    .header__menu-btn { display: flex; }

    .hero__title {
        font-size: clamp(2.4rem, 10vw, 4rem);
    }

    .portfolio {
        padding: var(--space-xl) var(--space-sm) var(--space-lg);
    }

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

    .portfolio__filters {
        gap: 0.5rem;
    }

    .portfolio__filter {
        padding: 0.5em 1em;
        font-size: 0.65rem;
    }

    .about {
        padding: var(--space-xl) var(--space-sm);
    }

    .about__stats {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--space-lg);
    }

    .about__stat {
        flex-direction: column;
        gap: 0.2rem;
    }

    .about__stat-num { min-width: auto; }

    .contact {
        padding: var(--space-xl) var(--space-sm);
    }

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

    .footer__links { gap: var(--space-sm); }

    .lightbox__prev { left: 0; }
    .lightbox__next { right: 0; }
}

@media (max-width: 480px) {
    .portfolio__grid {
        grid-template-columns: 1fr;
    }
}