/* ==========================================================================
   Alex Scott - Personal Site
   Soft Sage & Earth Tones Design
   ========================================================================== */

/* CSS Variables */
:root {
    --color-primary: #2D6A4F;
    --color-primary-light: #40916C;
    --color-primary-dark: #1B4332;
    --color-accent: #D4A574;
    --color-accent-light: #E5C9A8;
    --color-bg: #F1F5F2;
    --color-bg-alt: #E8EFEA;
    --color-surface: #FFFFFF;
    --color-surface-hover: #F8FAF8;
    --color-border: #D4DDD6;
    --color-border-light: #E5EBE7;
    --color-text: #2C3E35;
    --color-text-muted: #5C6D63;
    --color-text-heading: #1B4332;
    --font-display: 'Sora', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --shadow-sm: 0 1px 2px rgba(27, 67, 50, 0.04);
    --shadow-md: 0 4px 12px rgba(27, 67, 50, 0.06);
    --shadow-lg: 0 12px 32px rgba(27, 67, 50, 0.08);
    --shadow-xl: 0 24px 48px rgba(27, 67, 50, 0.12);
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    position: relative;
}

/* Subtle grain texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    z-index: -1;
}

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

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

ul, ol {
    list-style: none;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.nav {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.5rem;
    margin-bottom: 3rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: 100px;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 1.5rem;
    z-index: 100;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    font-size: 1.125rem;
    color: var(--color-text-muted);
    border-radius: 100px;
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--color-primary);
    background: var(--color-bg);
}

.nav-link.active {
    color: var(--color-surface);
    background: var(--color-primary);
}

.nav-tooltip {
    position: absolute;
    top: calc(100% + 0.75rem);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    padding: 0.5rem 0.875rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-surface);
    background: var(--color-text-heading);
    border-radius: 100px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
    z-index: 1000;
}

.nav-tooltip::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-bottom-color: var(--color-text-heading);
}

.nav-link:hover .nav-tooltip,
.nav-link:focus .nav-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Main Content
   ========================================================================== */

.main {
    flex: 1;
    position: relative;
}

/* ==========================================================================
   Panels
   ========================================================================== */

.panel {
    display: none;
    animation: fadeIn var(--transition-slow) ease;
}

.panel.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.panel-header h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-heading);
    margin-bottom: 0.75rem;
    letter-spacing: -0.03em;
}

.panel-header p {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
    max-width: 400px;
    margin: 0 auto;
}

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

.panel-about {
    padding: 2rem 0 4rem;
}

.about-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 5rem;
    align-items: center;
}

.about-text {
    padding-right: 1rem;
}

.about-text h1 {
    font-family: var(--font-display);
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--color-text-heading);
    margin-bottom: 0.25rem;
    letter-spacing: -0.04em;
    line-height: 1;
}

.about-text .subtitle {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 2rem;
    letter-spacing: -0.01em;
}

.about-text .bio {
    font-size: 1.0625rem;
    color: var(--color-text);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    max-width: 480px;
}

.about-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: white;
    background: var(--color-primary);
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(0);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-border);
    color: var(--color-text);
    box-shadow: none;
}

.btn-outline:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Projects Panel
   ========================================================================== */

.panel-projects {
    padding: 2rem 0 4rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(27, 67, 50, 0.85);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    background: var(--color-accent);
    border-radius: 100px;
    transform: translateY(8px);
    transition: transform var(--transition-base);
}

.project-card:hover .project-overlay span {
    transform: translateY(0);
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-heading);
    margin-bottom: 0.375rem;
}

.project-info p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.3125rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(45, 106, 79, 0.1);
    border-radius: 100px;
    letter-spacing: 0.01em;
}

/* ==========================================================================
   Contact Panel
   ========================================================================== */

.panel-contact {
    padding: 2rem 0 4rem;
}

.contact-content {
    max-width: 500px;
    margin: 0 auto;
}

.contact-methods {
    display: grid;
    gap: 1rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.contact-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateX(6px);
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    font-size: 1.25rem;
    color: var(--color-primary);
    background: rgba(45, 106, 79, 0.1);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text-heading);
    margin-bottom: 0.125rem;
}

.contact-details p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

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

.footer {
    text-align: center;
    padding: 3rem 0 1rem;
    margin-top: auto;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ==========================================================================
   Project Detail Pages
   ========================================================================== */

.project-detail {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-md);
}

.project-detail header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border-light);
}

.project-detail h1 {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-text-heading);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.project-detail p {
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
    line-height: 1.75;
}

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

.project-detail strong {
    color: var(--color-text-heading);
    font-weight: 600;
}

.project-detail a {
    color: var(--color-primary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.project-detail img {
    border-radius: var(--radius-lg);
    margin-top: 1.5rem;
    box-shadow: var(--shadow-md);
}

/* BPMeasure Form Styles */
.bpm-calculator {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin: 2rem 0;
}

.bpm-calculator form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.bpm-input-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.bpm-calculator label {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-text-heading);
    min-width: 70px;
}

.bpm-calculator input[type="number"] {
    flex: 1;
    max-width: 140px;
    padding: 0.875rem 1rem;
    font-size: 1.125rem;
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--color-text-heading);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.bpm-calculator input[type="number"]:hover {
    border-color: var(--color-text-muted);
}

.bpm-calculator input[type="number"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.15);
}

.bpm-calculator input[type="number"]:invalid {
    border-color: #DC2626;
    background: rgba(220, 38, 38, 0.05);
}

.bpm-result {
    margin-top: 0.5rem;
    padding: 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    text-align: center;
}

.bpm-result p {
    margin: 0 0 0.5rem 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.bpm-calculator output {
    display: block;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.03em;
}

.bpm-unit {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: 100px;
    transition: all var(--transition-fast);
}

.back-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateX(-4px);
}

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

@media (max-width: 900px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .about-text {
        order: 2;
        padding-right: 0;
    }

    .about-text h1 {
        font-size: 3.5rem;
    }

    .about-text .bio {
        max-width: 100%;
    }

    .about-image {
        order: 1;
        max-width: 280px;
        margin: 0 auto;
    }

    .about-cta {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .wrapper {
        padding: 1rem;
    }

    .nav {
        position: fixed;
        bottom: 1rem;
        left: 50%;
        transform: translateX(-50%);
        top: auto;
        margin-bottom: 0;
    }

    .nav-tooltip {
        top: auto;
        bottom: calc(100% + 0.75rem);
        left: 50%;
        right: auto;
        transform: translateX(-50%) translateY(4px);
    }

    .nav-tooltip::after {
        top: 100%;
        right: auto;
        bottom: auto;
        left: 50%;
        transform: translateX(-50%);
        border: 5px solid transparent;
        border-top-color: var(--color-text-heading);
        border-right-color: transparent;
    }

    .nav-link:hover .nav-tooltip,
    .nav-link.tooltip-active .nav-tooltip {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }

    .main {
        padding-bottom: 5rem;
    }

    .panel-header h2 {
        font-size: 2rem;
    }

    .about-text h1 {
        font-size: 2.75rem;
    }

    .about-text .subtitle {
        font-size: 1.125rem;
    }

    .about-text .bio {
        font-size: 1rem;
    }

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

    .project-detail {
        padding: 1.5rem;
    }

    .project-detail h1 {
        font-size: 1.75rem;
    }

    .bpm-calculator {
        padding: 1.5rem;
    }

    .bpm-input-group {
        flex-wrap: wrap;
    }

    .bpm-calculator input[type="number"] {
        max-width: 100%;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}