/* ==========================================
   Sections CSS - Section-Specific Layouts
   ========================================== */

/* Base Section Styles */
.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-16) var(--space-8);
    position: relative;
    overflow: hidden;
}

.section__container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: var(--z-base);
}

.section__title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-12);
}

.section__next-btn {
    margin-top: var(--space-12);
}

/* ==========================================
   Section 1: Landing
   ========================================== */

.section--landing {
    background: radial-gradient(ellipse at center, var(--color-bg-tertiary) 0%, var(--color-bg-primary) 70%);
}

.landing__title {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    line-height: 1.3;
    margin-bottom: var(--space-12);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.landing__title .highlight {
    display: block;
    font-size: var(--text-6xl);
    margin-top: var(--space-4);
}

#start-journey-btn {
    font-size: var(--text-lg);
    padding: var(--space-5) var(--space-12);
}

/* Landing background animation */
.landing__bg-animation {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.landing__bg-animation::before,
.landing__bg-animation::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.landing__bg-animation::before {
    background: var(--color-primary);
    top: -200px;
    right: -100px;
    animation: float 15s ease-in-out infinite;
}

.landing__bg-animation::after {
    background: var(--color-accent);
    bottom: -200px;
    left: -100px;
    animation: float 18s ease-in-out infinite reverse;
}

/* ==========================================
   Section 2: Introduction
   ========================================== */

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

.intro__text-container {
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-6);
}

.intro__line {
    font-size: var(--text-4xl);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    opacity: 0;
    margin: 0;
    overflow: hidden;
    white-space: nowrap;
}

.intro__line.typing {
    opacity: 1;
}

.intro__line.completed {
    opacity: 1;
}

.intro__line .cursor {
    display: inline-block;
    width: 3px;
    height: 1em;
    background: var(--color-primary);
    margin-left: 2px;
    animation: blink 0.7s infinite;
    vertical-align: text-bottom;
}

/* ==========================================
   Section 3: Skills
   ========================================== */

.section--skills {
    background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.skills__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

/* Skill Card */
.skill-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.skill-card:hover,
.skill-card:focus {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.skill-card:hover::before,
.skill-card:focus::before {
    opacity: 0.05;
}

.skill-card[aria-expanded="true"] {
    grid-column: span 1;
}

.skill-card__header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    position: relative;
    z-index: 1;
}

.skill-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    font-family: var(--font-mono);
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
}

.skill-card__title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
}

.skill-card__description {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    margin-bottom: 0;
    position: relative;
    z-index: 1;
}

/* Skill Demos */
.skill-card__demo {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.skill-card__demo--html pre {
    text-align: left;
    font-size: var(--text-xs);
    line-height: 1.5;
}

.skill-card__demo--html code {
    color: var(--color-accent);
}

/* CSS Demo Box */
.css-demo-box {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    margin: var(--space-4) auto;
    transition: all var(--transition-slow);
}

.skill-card--css:hover .css-demo-box {
    transform: rotate(180deg) scale(1.2);
    border-radius: 50%;
    box-shadow: var(--shadow-glow);
}

/* JavaScript Demo Styles */
.js-demo-tabs {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.js-demo-tab {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.js-demo-tab:hover {
    border-color: var(--color-primary);
    color: var(--color-text-primary);
}

.js-demo-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-primary);
}

.js-demo-content {
    min-height: 80px;
}

.js-demo {
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-4);
}

.js-demo.active {
    display: flex;
}

/* Counter Demo */
.counter-value {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--color-primary-light);
    font-family: var(--font-mono);
}

.counter-controls {
    display: flex;
    gap: var(--space-4);
}

.counter-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* Modal and Fetch Demo Buttons */
.demo-modal-trigger,
.demo-fetch-btn,
.demo-theme-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.demo-modal-trigger:hover,
.demo-fetch-btn:hover,
.demo-theme-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.fetch-result {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-align: center;
    min-height: 20px;
}

.theme-icon {
    font-size: var(--text-lg);
}

/* ==========================================
   Section 4: Projects
   ========================================== */

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

.projects__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

/* Project Card */
.project-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
}

.project-card:hover,
.project-card:focus {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.project-card__badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    font-family: var(--font-mono);
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.project-card__title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.project-card__problem,
.project-card__solution {
    margin-bottom: var(--space-4);
}

.project-card__problem p,
.project-card__solution p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

.project-card__tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

/* ==========================================
   Section 5: Mindset
   ========================================== */

.section--mindset {
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.mindset__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

/* Mindset Card */
.mindset-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    text-align: center;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.mindset-card:hover,
.mindset-card:focus {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    background: var(--color-bg-card-hover);
}

.mindset-card__icon {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-6);
    display: block;
}

.mindset-card__text {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    margin: 0;
}

/* ==========================================
   Section 6: Call to Action
   ========================================== */

.section--cta {
    background: radial-gradient(ellipse at center, var(--color-bg-tertiary) 0%, var(--color-bg-primary) 70%);
}

.section--cta .section__title {
    font-size: var(--text-4xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta__tagline {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-12);
}

.cta__buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

/* ==========================================
   Modal Styles
   ========================================== */

.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal.active .modal__content {
    transform: scale(1) translateY(0);
}

.modal__close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal__close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border-color: var(--color-primary);
}

.modal__header {
    margin-bottom: var(--space-8);
    padding-right: var(--space-12);
}

.modal__badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    font-family: var(--font-mono);
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.modal__title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
}

.modal__body {
    text-align: left;
}

.modal__section {
    margin-bottom: var(--space-6);
}

.modal__section h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.modal__section p {
    color: var(--color-text-secondary);
    margin: 0;
}

.modal__tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.modal__preview {
    margin-top: var(--space-8);
}

.modal__image {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal__footer {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.modal__link {
    flex: 1;
    text-align: center;
}

/* Demo Modal (simpler styling) */
.modal--demo .modal__content {
    max-width: 400px;
    text-align: center;
}

.modal--demo .modal__title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.modal--demo p {
    color: var(--color-text-secondary);
}