/* =================================================================
 * Portfolio Design Enhancements
 * Dark Mode, Animations, Modern UI Improvements
 * ================================================================= */

/* ===================================================================
 * # THEME VARIABLES - Light & Dark Mode
 * =================================================================== */

:root {
    /* Light Mode Colors (Default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f0f2f5;
    --text-primary: #2D2327;
    --text-secondary: #5a5a5a;
    --text-tertiary: #808080;
    --accent-primary: #5F9295;
    --accent-secondary: #4a7b7e;
    --accent-gradient: linear-gradient(135deg, #5F9295 0%, #4a7b7e 100%);
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --overlay-dark: rgba(0, 0, 0, 0.5);
    --overlay-light: rgba(255, 255, 255, 0.9);

    /* CTA Colors */
    --cta-primary: #0066cc;
    --cta-primary-hover: #0052a3;
    --cta-secondary: #ff6b35;
    --cta-secondary-hover: #e55a2b;
}

[data-theme="dark"] {
    /* Dark Mode Colors */
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --bg-tertiary: #2d2d2d;
    --text-primary: #f0f0f0;
    --text-secondary: #b8b8b8;
    --text-tertiary: #909090;
    --accent-primary: #6fb3b8;
    --accent-secondary: #5a9ca0;
    --accent-gradient: linear-gradient(135deg, #6fb3b8 0%, #5a9ca0 100%);
    --border-color: #3a3a3a;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --overlay-dark: rgba(0, 0, 0, 0.7);
    --overlay-light: rgba(255, 255, 255, 0.1);

    /* CTA Colors for dark mode */
    --cta-primary: #3d8bfd;
    --cta-primary-hover: #5a9fff;
    --cta-secondary: #ff8c5a;
    --cta-secondary-hover: #ffa073;

    /* Original Augustine Variable Overrides */
    --color-text: var(--text-primary);
    --color-text-dark: var(--text-primary);
    --color-text-light: var(--text-secondary);
    --color-body: var(--bg-primary);
    --color-border: var(--border-color);
    --color-gray-17: var(--text-primary);
    --color-gray-19: var(--text-primary);
}

/* Smooth theme transition */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .s-header__branding a,
[data-theme="dark"] .s-header__nav a,
[data-theme="dark"] .s-footer__social a,
[data-theme="dark"] .s-header__social a {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .s-header__social svg path,
[data-theme="dark"] .s-footer__social svg path {
    fill: var(--text-primary) !important;
}

[data-theme="dark"] .s-header__menu-toggle span {
    color: var(--text-primary);
}

[data-theme="dark"] .s-header__menu-toggle::before,
[data-theme="dark"] .s-header__menu-toggle::after,
[data-theme="dark"] .s-header__menu-toggle span::before,
[data-theme="dark"] .s-header__menu-toggle span::after {
    background-color: var(--text-primary);
}

/* ===================================================================
 * # DARK MODE TOGGLE SWITCH
 * =================================================================== */

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem;
    margin-left: 2rem;
    z-index: 1000;
}

.theme-toggle__switch {
    position: relative;
    width: 48px;
    height: 24px;
    background: var(--border-color);
    border-radius: 12px;
    transition: background-color 0.3s ease;
}

.theme-toggle__switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .theme-toggle__switch {
    background: var(--accent-primary);
}

[data-theme="dark"] .theme-toggle__switch::after {
    transform: translateX(24px);
}

.theme-toggle__icon {
    font-size: 1.2rem;
    transition: opacity 0.3s ease;
}

.theme-toggle__icon--sun {
    opacity: 1;
}

.theme-toggle__icon--moon {
    opacity: 0.3;
}

[data-theme="dark"] .theme-toggle__icon--sun {
    opacity: 0.3;
}

[data-theme="dark"] .theme-toggle__icon--moon {
    opacity: 1;
}

/* ===================================================================
 * # ANIMATED GRADIENT TEXT & SCALING
 * =================================================================== */

.s-header__branding {
    font-size: 3.8rem;
    /* Scaled up from 3rem */
}

.s-header__branding a {
    font-weight: 700;
}

.s-intro__text-huge {
    font-size: clamp(8rem, 20vw, 24.6rem);
    /* Restored to massive scale */
    line-height: 0.9;
    margin-bottom: 2rem;
    font-weight: 700;
}

.gradient-text {
    background: linear-gradient(135deg,
            #5F9295 0%,
            #3d6e72 25%,
            #5F9295 50%,
            #3d6e72 75%,
            #5F9295 100%);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 8s ease infinite;
    display: inline-block;
}

[data-theme="dark"] .gradient-text {
    background: linear-gradient(135deg,
            #6fb3b8 0%,
            #4a9ca0 25%,
            #6fb3b8 50%,
            #4a9ca0 75%,
            #6fb3b8 100%);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* ===================================================================
 * # TYPING EFFECT
 * =================================================================== */

.typing-text {
    overflow: hidden;
    border-right: 3px solid var(--accent-primary);
    white-space: nowrap;
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from {
        width: 0;
    }

    to {
        width: 100%;
    }
}

@keyframes blink-caret {

    from,
    to {
        border-color: transparent;
    }

    50% {
        border-color: var(--accent-primary);
    }
}

/* ===================================================================
 * # CTA BUTTONS
 * =================================================================== */

.cta-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
}

.btn-cta--primary {
    background: var(--cta-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.btn-cta--primary:hover {
    background: var(--cta-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
}

.btn-cta--secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--text-primary);
    /* Use text color for outline to guarantee contrast */
}

.btn-cta--secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

/* Ripple effect */
.btn-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-cta:active::before {
    width: 300px;
    height: 300px;
}

/* ===================================================================
 * # PROJECT FILTER BUTTONS
 * =================================================================== */

.project-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 2px solid transparent;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

/* ===================================================================
 * # ENHANCED PROJECT CARDS
 * =================================================================== */

.folio-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.folio-item:hover {
    transform: translateY(-8px);
}

.folio-item__thumb {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.folio-item:hover .folio-item__thumb {
    box-shadow: var(--shadow-lg);
}

.folio-item__thumb img {
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.folio-item:hover .folio-item__thumb img {
    transform: scale(1.05);
}

/* Tech stack badges overlay */
.tech-stack {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.folio-item:hover .tech-stack {
    opacity: 1;
    transform: translateY(0);
}

.tech-badge {
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    font-size: 0.75rem;
    color: white;
    font-weight: 500;
}

/* ===================================================================
 * # SKILL ICONS & CHIPS
 * =================================================================== */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
}

.skill-chip:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.skill-chip i,
.skill-chip svg,
.skill-chip .skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent-primary);
    transition: transform 0.3s ease;
}

.skill-chip:hover .skill-icon {
    transform: scale(1.1);
}

.skill-chip span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skills-category {
    margin-bottom: 3rem;
}

.skills-category h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
    border-left: 3px solid var(--accent-primary);
    padding-left: 1rem;
}

/* ===================================================================
 * # SCROLL ANIMATIONS
 * =================================================================== */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Stagger animation delays */
.fade-in:nth-child(1) {
    transition-delay: 0.1s;
}

.fade-in:nth-child(2) {
    transition-delay: 0.2s;
}

.fade-in:nth-child(3) {
    transition-delay: 0.3s;
}

.fade-in:nth-child(4) {
    transition-delay: 0.4s;
}

.fade-in:nth-child(5) {
    transition-delay: 0.5s;
}

/* ===================================================================
 * # THEME OVERRIDES FOR EXISTING ELEMENTS
 * =================================================================== */

[data-theme="dark"] body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .s-header {
    background-color: var(--bg-secondary);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .s-intro {
    background-color: var(--bg-primary);
}

[data-theme="dark"] .s-about,
[data-theme="dark"] .s-works,
[data-theme="dark"] .p-partners,
[data-theme="dark"] .s-footer,
[data-theme="dark"] section {
    background-color: var(--bg-secondary);
}

[data-theme="dark"] .s-intro {
    background-color: var(--bg-primary);
}

[data-theme="dark"] .site-title a {
    color: var(--text-primary);
}

[data-theme="dark"] .text-pretitle {
    color: var(--accent-primary);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6,
[data-theme="dark"] .h1,
[data-theme="dark"] .h2,
[data-theme="dark"] .h3,
[data-theme="dark"] .h4,
[data-theme="dark"] .h5,
[data-theme="dark"] .h6 {
    color: var(--text-primary);
}

[data-theme="dark"] .timeline__block {
    border-left-color: var(--border-color);
}

[data-theme="dark"] .timeline__bullet {
    background-color: var(--accent-primary);
    border-color: var(--bg-secondary);
}

[data-theme="dark"] .folio-item__info {
    color: var(--text-primary);
}

[data-theme="dark"] .clients-list a {
    color: var(--text-primary);
}

[data-theme="dark"] .clients-list a:hover {
    color: var(--accent-primary);
}

/* ===================================================================
 * # LOADING SKELETON
 * =================================================================== */

.skeleton {
    background: linear-gradient(90deg,
            var(--bg-tertiary) 25%,
            var(--bg-secondary) 50%,
            var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ===================================================================
 * # RESPONSIVE ADJUSTMENTS
 * =================================================================== */

@media screen and (max-width: 768px) {
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-cta {
        justify-content: center;
        text-align: center;
    }

    .project-filters {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 1rem;
    }

    .theme-toggle {
        margin-left: 0;
        margin-top: 1rem;
    }
}

/* ===================================================================
 * # UTILITY CLASSES
 * =================================================================== */

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-4px);
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass-effect {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}