/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000000;
    --text-color: #000000;
    --text-light: #4a4a4a;
    --bg-white: #ffffff;
    --bg-light: #fafafa;
    --border-color: #e8e8e8;
    --accent-color: #000000;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-white);
    font-size: 16px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2vw;
}

/* Header and Navigation */
header {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
    background-color: rgba(255, 255, 255, 0.95);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5vw 0;
    min-height: 70px;
}

.logo a {
    text-decoration: none;
}

.logo h1 {
    font-size: 1.3rem;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 400;
    font-size: 0.95rem;
    transition: opacity 0.3s, background-color 0.3s;
    letter-spacing: 0.01em;
}

.nav-links a:hover {
    opacity: 0.6;
}

.nav-links .nav-cta {
    background-color: var(--primary-color);
    color: white;
    padding: 0.6rem 1.5rem;
    border-radius: 4px;
}

.nav-links .nav-cta:hover {
    opacity: 0.85;
}

/* Hero Section */
.hero {
    padding: 4vw 0 5vw 0;
    text-align: center;
    background-color: var(--bg-white);
}

.hero h2 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    margin-bottom: 1.5rem;
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--primary-color);
}

.hero .tagline {
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    margin-bottom: 1.5rem;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: var(--text-light);
}

.hero .description {
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    max-width: 800px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
    color: var(--text-light);
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    text-decoration: none;
    padding: 1rem 2.5rem;
    border-radius: 4px;
    font-weight: 400;
    font-size: 1rem;
    transition: opacity 0.3s, background-color 0.3s;
    display: inline-block;
}

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

.btn-primary:hover {
    opacity: 0.85;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

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

/* About Section */
.about {
    padding: 5vw 0;
    background-color: var(--bg-light);
}

.about h3 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 3vw;
    color: var(--primary-color);
    font-weight: 400;
    letter-spacing: -0.02em;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2vw;
    margin-top: 2rem;
}

.philosophy-card {
    background-color: var(--bg-white);
    padding: 2.5rem 2rem;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.philosophy-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.philosophy-card .icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.philosophy-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 500;
    letter-spacing: -0.01em;
}

.philosophy-card p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 1rem;
    font-weight: 300;
}

/* Tools Section */
.tools {
    padding: 5vw 0;
    background-color: var(--bg-white);
}

.tools h3 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 400;
    letter-spacing: -0.02em;
}

.tools-intro {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3vw;
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    font-weight: 300;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2vw;
    margin-bottom: 2rem;
}

.tool-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.tool-card .tool-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.tool-card .tool-icon {
    font-size: 2.5rem;
}

.tool-card h4 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin: 0;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.tool-card .tool-category {
    display: inline-block;
    background-color: transparent;
    color: var(--text-light);
    padding: 0;
    border: none;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tool-card p {
    color: var(--text-light);
    flex-grow: 1;
    margin-bottom: 2rem;
    line-height: 1.7;
    font-size: 1rem;
    font-weight: 300;
}

.tool-card .tool-link {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.9rem 2rem;
    text-decoration: none;
    font-weight: 400;
    text-align: center;
    transition: opacity 0.3s ease;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.tool-card .tool-link:hover {
    opacity: 0.85;
}

.tool-card .tool-status {
    display: inline-block;
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
    margin-top: 1rem;
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 400;
}

.tool-status.beta {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tool-status.stable {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.coming-soon {
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--bg-light);
    color: var(--text-light);
    font-size: 1.1rem;
    font-weight: 300;
    border: 1px solid var(--border-color);
}

/* Contact Section */
.contact {
    padding: 5vw 0;
    background-color: var(--bg-light);
    text-align: center;
}

.contact h3 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-weight: 400;
    letter-spacing: -0.02em;
}

.contact p {
    color: var(--text-light);
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    margin-bottom: 0.8rem;
    font-weight: 300;
}

.contact-email a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 400;
    transition: opacity 0.3s;
}

.contact-email a:hover {
    opacity: 0.6;
}

/* Footer */
footer {
    background-color: var(--bg-white);
    color: var(--text-light);
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

footer p {
    font-size: 0.9rem;
    font-weight: 300;
}

/* Auth Pages */
.auth-section {
    padding: 5vw 0 10vw 0;
    min-height: 60vh;
}

.auth-container {
    max-width: 450px;
    margin: 0 auto;
    text-align: center;
}

.auth-container h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 0.5rem;
    font-weight: 400;
    letter-spacing: -0.02em;
}

.auth-intro {
    color: var(--text-light);
    margin-bottom: 2.5rem;
    font-size: 1rem;
}

.auth-form {
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 400;
    font-size: 0.95rem;
    color: var(--text-color);
}

.form-group input {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-full {
    width: 100%;
    margin-top: 1rem;
}

.auth-footer {
    margin-top: 2rem;
    color: var(--text-light);
    font-size: 0.95rem;
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 400;
}

.auth-footer a:hover {
    opacity: 0.7;
}

.auth-message {
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
    font-size: 0.95rem;
}

.auth-message-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.auth-message-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.auth-message-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Dashboard */
.dashboard-section {
    padding: 5vw 0;
    min-height: 60vh;
}

.dashboard-intro {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.dashboard-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
    font-weight: 400;
    letter-spacing: -0.02em;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.dashboard-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
}

.dashboard-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.solution-list {
    color: var(--text-light);
}

.empty-state {
    color: var(--text-light);
    font-style: italic;
}

.account-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.account-info p {
    color: var(--text-color);
    font-size: 1rem;
}

.link-button {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.95rem;
    transition: opacity 0.3s;
}

.link-button:hover {
    opacity: 0.7;
}

.dashboard-actions {
    text-align: center;
    padding-top: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        padding: 4vw 0;
    }

    .logo img {
        height: 40px;
    }

    .logo h1 {
        font-size: 1.1rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .nav-links a {
        font-size: 0.9rem;
    }

    .hero {
        padding: 8vw 0 10vw 0;
    }

    .philosophy-grid {
        grid-template-columns: 1fr;
        gap: 3vw;
    }

    .tools-grid {
        grid-template-columns: 1fr;
        gap: 3vw;
    }

    .philosophy-card,
    .tool-card {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 5vw;
    }

    .hero,
    .about,
    .tools,
    .contact {
        padding: 10vw 0;
    }

    .nav-links {
        gap: 1rem;
    }
}