/* ==========================================================================
   Aaron Mannenbach - Personal Website
   Modern, clean design - PHP 8.4 compatible
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
    --color-primary: #e88a1a;
    --color-primary-dark: #c87210;
    --color-primary-light: #f5a623;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-bg-dark: #1a1a2e;
    --color-text: #2d3436;
    --color-text-light: #636e72;
    --color-text-muted: #b2bec3;
    --color-border: #e9ecef;
    --color-white: #ffffff;

    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);

    --transition: 0.3s ease;
    --max-width: 1100px;
    --nav-height: 70px;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ---------- Layout ---------- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-2xl) 0;
}

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

.section__title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--color-text);
    position: relative;
}

.section__title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--color-primary);
    margin: var(--space-sm) auto 0;
    border-radius: 2px;
}

/* ---------- Navigation ---------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: background-color var(--transition), box-shadow var(--transition);
}

.nav--scrolled {
    background-color: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
}

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

.nav__logo {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
    text-decoration: none;
    transition: color var(--transition);
}

.nav--scrolled .nav__logo {
    color: var(--color-text);
}

.nav__menu {
    list-style: none;
    display: flex;
    gap: var(--space-lg);
}

.nav__link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color var(--transition);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition);
}

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

.nav--scrolled .nav__link {
    color: var(--color-text-light);
}

.nav__link:hover,
.nav--scrolled .nav__link:hover {
    color: var(--color-primary);
}

/* Mobile toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
}

.nav--scrolled .nav__toggle span {
    background: var(--color-text);
}

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

.hero__bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    z-index: -1;
}

.hero__bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(232, 138, 26, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(232, 138, 26, 0.08) 0%, transparent 40%);
}

.hero__container {
    text-align: center;
    padding-top: var(--nav-height);
}

.hero__content {
    animation: fadeInUp 0.8s ease-out;
}

.hero__photo {
    width: 180px;
    height: 180px;
    margin: 0 auto var(--space-lg);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 4px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}

.hero__photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero__name {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.01em;
}

.hero__title {
    font-size: 1.25rem;
    color: var(--color-primary-light);
    font-weight: 400;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
}

.hero__actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.8rem 2rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(232, 138, 26, 0.3);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn--outline:hover {
    border-color: var(--color-white);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* ---------- About ---------- */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-xl);
    align-items: start;
}

.about__card {
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
}

.about__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.about__detail {
    display: flex;
    flex-direction: column;
}

.about__detail dt {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 0.2rem;
}

.about__detail dd {
    font-size: 1rem;
    color: var(--color-text);
}

.about__detail dd a {
    color: var(--color-primary);
}

.about__summary p {
    margin-bottom: var(--space-sm);
    color: var(--color-text-light);
    font-size: 1.05rem;
    line-height: 1.8;
}

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

/* ---------- Timeline ---------- */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline__item {
    position: relative;
    padding-bottom: var(--space-lg);
}

.timeline__item:last-child {
    padding-bottom: 0;
}

.timeline__marker {
    position: absolute;
    left: -40px;
    top: 4px;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    z-index: 1;
}

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

.timeline__content {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition), transform var(--transition);
}

.section--alt .timeline__content {
    background: var(--color-white);
}

.timeline__content:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.timeline__period {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.timeline__title {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0.2rem 0;
    color: var(--color-text);
}

.timeline__company {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: 0.4rem;
}

.timeline__desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.timeline__desc a {
    font-weight: 500;
}

/* ---------- Education ---------- */
.education__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.education__card {
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: box-shadow var(--transition), transform var(--transition);
}

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

.education__icon {
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.education__degree {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: var(--color-text);
}

.education__school {
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.education__desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* ---------- Services ---------- */
.services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    max-width: 800px;
    margin: 0 auto;
}

.services__card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: box-shadow var(--transition), transform var(--transition);
}

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

.services__icon {
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.services__title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.services__desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.services__desc a {
    font-weight: 500;
    display: inline-block;
    margin-top: 0.3rem;
}

/* ---------- Contact ---------- */
.contact {
    background: var(--color-bg-dark);
    color: var(--color-white);
}

.contact .section__title {
    color: var(--color-white);
}

.contact .section__title::after {
    background: var(--color-primary-light);
}

.contact__content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.contact__text {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-lg);
}

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

.contact__method {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all var(--transition);
    width: 100%;
    max-width: 400px;
    justify-content: center;
}

.contact__method:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.contact__method svg {
    flex-shrink: 0;
}

/* ---------- Footer ---------- */
.footer {
    background: #111122;
    padding: var(--space-lg) 0;
}

.footer__content {
    text-align: center;
}

.footer__social {
    margin-bottom: var(--space-sm);
}

.footer__social a {
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition);
}

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

.footer__copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-animate] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-animate].animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Responsive ---------- */

/* Tablet */
@media (max-width: 768px) {
    :root {
        --space-2xl: 4rem;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        gap: 0;
        padding: var(--space-sm) 0;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
    }

    .nav__menu.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__menu .nav__link {
        display: block;
        padding: var(--space-sm) var(--space-md);
        color: var(--color-text);
    }

    .nav__menu .nav__link::after {
        display: none;
    }

    .hero__name {
        font-size: 2.5rem;
    }

    .hero__title {
        font-size: 1.1rem;
    }

    .section__title {
        font-size: 1.8rem;
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

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

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

    .timeline {
        padding-left: 35px;
    }

    .timeline__marker {
        left: -35px;
        width: 28px;
        height: 28px;
    }

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

    .timeline__content {
        padding: var(--space-sm) var(--space-md);
    }
}

/* Mobile */
@media (max-width: 480px) {
    .hero__name {
        font-size: 2rem;
    }

    .hero__photo {
        width: 140px;
        height: 140px;
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }

    .contact__method {
        font-size: 0.85rem;
        padding: 0.8rem var(--space-sm);
    }
}

/* Large screens */
@media (min-width: 1200px) {
    :root {
        --max-width: 1140px;
    }
}