/* ==========================================================================
   Main Stylesheet - TBDesigned Theme
   Mobile-first responsive design
   ========================================================================== */

/* Import design tokens */
@import url('variables.css');

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

.container {
    width: 100%;
    max-width: var(--content-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
}

.container--narrow {
    max-width: var(--content-narrow);
}

.section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .section {
        padding-top: var(--space-16);
        padding-bottom: var(--space-16);
    }
}

@media (min-width: 1024px) {
    .section {
        padding-top: var(--space-20);
        padding-bottom: var(--space-20);
    }
}

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

.section--dark {
    background-color: var(--color-gray-900);
    color: var(--color-gray-100);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: var(--color-white);
}

/* ==========================================================================
   Grid System
   ========================================================================== */

.grid {
    display: grid;
    gap: var(--space-6);
}

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

.grid--3 {
    grid-template-columns: repeat(1, 1fr);
}

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

@media (min-width: 768px) {
    .grid--2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid--3 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .grid--4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Flexbox utilities */
.flex {
    display: flex;
}

.flex--wrap {
    flex-wrap: wrap;
}

.flex--center {
    align-items: center;
    justify-content: center;
}

.flex--between {
    justify-content: space-between;
}

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

.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

@media (min-width: 768px) {
    .header-inner {
        height: 5rem;
    }
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-heading);
    text-decoration: none;
}

.site-logo:hover {
    text-decoration: none;
    color: var(--color-primary);
}

.site-logo img {
    height: 2rem;
    width: auto;
}

/* Desktop Navigation */
.main-nav {
    display: none;
}

@media (min-width: 768px) {
    .main-nav {
        display: flex;
        align-items: center;
        gap: var(--space-8);
    }
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--color-text);
    font-weight: var(--font-medium);
    padding: var(--space-2) 0;
    position: relative;
    text-decoration: none;
}

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

.nav-menu a:hover::after,
.nav-menu .current-menu-item a::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
    cursor: pointer;
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-heading);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-nav {
    display: none;
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg);
    z-index: var(--z-dropdown);
    padding: var(--space-6);
    overflow-y: auto;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
}

.mobile-nav .nav-menu li {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav .nav-menu a {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--text-lg);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

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

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

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

.btn--ghost {
    background-color: transparent;
    color: var(--color-text);
}

.btn--ghost:hover {
    background-color: var(--color-surface);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn--sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.btn--full {
    width: 100%;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
    background-color: var(--color-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.card__image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

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

.card:hover .card__image img {
    transform: scale(1.05);
}

.card__content {
    padding: var(--space-6);
}

.card__title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.card__text {
    color: var(--color-muted);
    margin-bottom: var(--space-4);
}

.card__meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-muted);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
    color: var(--color-white);
    overflow: hidden;
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero__badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    margin-bottom: var(--space-6);
}

.hero__title {
    font-size: var(--text-4xl);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
    .hero__title {
        font-size: var(--text-5xl);
    }
}

@media (min-width: 1024px) {
    .hero__title {
        font-size: var(--text-6xl);
    }
}

.hero__subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-300);
    margin-bottom: var(--space-8);
    max-width: 600px;
}

@media (min-width: 768px) {
    .hero__subtitle {
        font-size: var(--text-xl);
    }
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.hero__bg {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    opacity: 0.1;
}

/* ==========================================================================
   Service Cards
   ========================================================================== */

.service-card {
    background-color: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
}

.service-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.service-card__icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary-50);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    font-size: var(--text-2xl);
}

.service-card__title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.service-card__description {
    color: var(--color-muted);
    margin-bottom: var(--space-4);
}

.service-card__features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-6) 0;
}

.service-card__features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
}

.service-card__features li::before {
    content: '✓';
    color: var(--color-success);
    font-weight: var(--font-bold);
}

/* Pricing card variant */
.pricing-card {
    text-align: center;
}

.pricing-card__price {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--color-heading);
    margin-bottom: var(--space-2);
}

.pricing-card__price span {
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    color: var(--color-muted);
}

.pricing-card--featured {
    border: 2px solid var(--color-primary);
    position: relative;
}

.pricing-card--featured::before {
    content: 'Most Popular';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
}

/* ==========================================================================
   Testimonials
   ========================================================================== */

.testimonial {
    background-color: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow);
}

.testimonial__quote {
    font-size: var(--text-lg);
    font-style: italic;
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
    position: relative;
    padding-left: var(--space-6);
    border-left: 4px solid var(--color-primary);
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.testimonial__avatar {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-full);
    object-fit: cover;
}

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

.testimonial__name {
    font-weight: var(--font-semibold);
    color: var(--color-heading);
}

.testimonial__role {
    font-size: var(--text-sm);
    color: var(--color-muted);
}

/* ==========================================================================
   Portfolio/Project Grid
   ========================================================================== */

.project-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.project-card__image {
    aspect-ratio: 4 / 3;
}

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

.project-card:hover .project-card__image img {
    transform: scale(1.1);
}

.project-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-6);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.project-card__title {
    color: var(--color-white);
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.project-card__category {
    color: var(--color-gray-300);
    font-size: var(--text-sm);
}

/* ==========================================================================
   Forms
   ========================================================================== */

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

.form-label {
    display: block;
    font-weight: var(--font-medium);
    margin-bottom: var(--space-2);
    color: var(--color-heading);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background-color: var(--color-bg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-100);
    outline: none;
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-help {
    font-size: var(--text-sm);
    color: var(--color-muted);
    margin-top: var(--space-2);
}

.form-error {
    font-size: var(--text-sm);
    color: var(--color-error);
    margin-top: var(--space-2);
}

.form-input.error,
.form-textarea.error {
    border-color: var(--color-error);
}

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

.site-footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding-top: var(--space-16);
    padding-bottom: var(--space-8);
}

.footer-grid {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .site-logo {
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer-brand p {
    color: var(--color-gray-400);
}

.footer-title {
    color: var(--color-white);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-4);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
    text-decoration: none;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-700);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.footer-copyright {
    color: var(--color-gray-500);
    font-size: var(--text-sm);
}

.social-links {
    display: flex;
    gap: var(--space-4);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-800);
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    text-align: center;
    padding: var(--space-16) var(--gutter);
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.cta-section .btn--secondary {
    border-color: var(--color-white);
    color: var(--color-white);
}

.cta-section .btn--secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
}

/* ==========================================================================
   Blog / Archive
   ========================================================================== */

.post-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.post-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-muted);
    margin-bottom: var(--space-4);
}

.post-content {
    max-width: var(--content-narrow);
    margin: 0 auto;
}

.post-content h2,
.post-content h3,
.post-content h4 {
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
}

.post-content li {
    margin-bottom: var(--space-2);
}

.post-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--space-6);
    margin: var(--space-6) 0;
    font-style: italic;
    color: var(--color-muted);
}

.post-content pre {
    background-color: var(--color-gray-900);
    color: var(--color-gray-100);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: var(--space-4) 0;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

/* ==========================================================================
   Client Portal Specific
   ========================================================================== */

.portal-dashboard {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .portal-dashboard {
        grid-template-columns: 250px 1fr;
    }
}

.portal-sidebar {
    background-color: var(--color-surface);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
}

.portal-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.portal-nav li {
    margin-bottom: var(--space-2);
}

.portal-nav a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.portal-nav a:hover,
.portal-nav a.active {
    background-color: var(--color-primary-50);
    color: var(--color-primary);
    text-decoration: none;
}

.portal-content {
    background-color: var(--color-bg);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.project-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.project-status--pending {
    background-color: var(--color-warning-light);
    color: var(--color-gray-900);
}

.project-status--in-progress {
    background-color: var(--color-info-light);
    color: var(--color-white);
}

.project-status--review {
    background-color: var(--color-secondary-light);
    color: var(--color-white);
}

.project-status--completed {
    background-color: var(--color-success-light);
    color: var(--color-white);
}

/* File list for downloads */
.file-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.file-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.file-list li:last-child {
    border-bottom: none;
}

.file-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.file-icon {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
}

/* ==========================================================================
   404 Page
   ========================================================================== */

.error-page {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-8);
}

.error-page__code {
    font-size: 8rem;
    font-weight: var(--font-extrabold);
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--space-4);
}

.error-page__title {
    margin-bottom: var(--space-4);
}

.error-page__text {
    color: var(--color-muted);
    margin-bottom: var(--space-8);
    max-width: 400px;
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

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