:root {
    --bg-color: #fbfbfd;
    --text-color: #1d1d1f;
    --text-muted: #86868b;
    --primary-color: #0066cc;
    --primary-hover: #0077ed;
    --nav-bg: rgba(251, 251, 253, 0.8);
    --border-radius: 12px;
    --transition-speed: 0.3s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar (Glassmorphism) */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 52px;
}

.brand {
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: -0.5px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
    font-size: 0.85rem;
    font-weight: 400;
}

.nav-links a {
    opacity: 0.8;
}

.nav-links a:hover {
    opacity: 1;
}

.btn-outline {
    border: 1px solid var(--text-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}
.btn-outline:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
}

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

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

.btn-link {
    color: var(--primary-color);
    padding: 12px 0;
}
.btn-link:hover {
    color: var(--primary-hover);
}

/* Hero Section */
.hero {
    padding-top: 150px;
    padding-bottom: 80px;
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: -1.5px;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.3rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 30px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
    align-items: center;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding-bottom: 100px;
}

.feature-box {
    background: #ffffff;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    text-align: center;
}

.feature-box h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.feature-box p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    border-top: 1px solid rgba(0,0,0,0.05);
    padding: 30px 0;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Auth Module */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 100px);
    padding: 20px;
    margin-top: 50px;
}

.auth-box {
    background: #ffffff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.auth-box h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.auth-box p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 15px;
}

.input-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s;
    font-family: inherit;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.btn-block {
    width: 100%;
    display: block;
}

.auth-footer {
    margin-top: 20px;
    font-size: 0.85rem;
}

.auth-footer a {
    color: var(--primary-color);
}

.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.alert-error {
    background-color: #fdf2f2;
    color: #d92d20;
    border: 1px solid #f9d9d9;
}

/* Page Layouts & Typography */
.section-padding {
    padding: 100px 0;
}
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -1px;
}
.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 50px;
}
.text-center { text-align: center; }

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    align-items: center;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* UI Cards (Testimonials, etc) */
.card {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.04);
}
.testimonial-text {
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 20px;
    color: var(--text-color);
}
.testimonial-author {
    font-weight: 600;
    color: var(--primary-color);
}

/* Forms */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.form-control {
    width: 100%;
    padding: 16px 20px;
    border: 1px solid #e5e5ea;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    background: #fafafa;
    transition: all 0.3s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}
textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* Workflow */
.workflow-step {
    text-align: center;
    padding: 30px;
    position: relative;
}
.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

/* Portfolio Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}
.gallery-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    height: 300px;
    background: #eaeaea;
}
.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.gallery-item:hover img {
    transform: scale(1.05);
}
.gallery-item:hover .gallery-overlay {
    opacity: 1;
}
.gallery-title {
    color: white;
    font-size: 1.4rem;
    font-weight: 600;
}
.gallery-cat {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
}