/* =====================================================
   SimplyTrading.ai - Main Stylesheet
   ===================================================== */

/* ----- CSS Variables ----- */
:root {
    /* Colors */
    --color-primary: #d4af37;
    --color-primary-light: #e5c76b;
    --color-primary-dark: #b8942d;

    --color-bg-dark: #0a0e17;
    --color-bg-medium: #0f1420;
    --color-bg-light: #151b2b;
    --color-bg-card: #1a2235;

    --color-text-primary: #ffffff;
    --color-text-secondary: #a0aec0;
    --color-text-muted: #64748b;

    --color-border: #2d3748;
    --color-border-light: #3d4a5c;

    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(212, 175, 55, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ----- Reset & Base ----- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

img {
    max-width: 100%;
    height: auto;
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input {
    font-family: inherit;
}

/* ----- Utility Classes ----- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.hidden {
    display: none !important;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ----- Buttons ----- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-bg-dark);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

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

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

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: none;
}

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

.btn-social {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.btn-social:hover {
    background: var(--color-bg-card);
    border-color: var(--color-border-light);
}

.btn-social svg {
    width: 20px;
    height: 20px;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

.btn-loader {
    display: inline-flex;
}

.spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* ----- Header & Navigation ----- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.25rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-bg-dark);
    font-weight: 700;
    border-radius: var(--radius-md);
}

.logo-accent {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-links a:not(.btn) {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.nav-links a:not(.btn):hover {
    color: var(--color-text-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* ----- Hero Section ----- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
}

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

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

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

.chart-mockup {
    width: 100%;
    max-width: 450px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.chart-title {
    font-weight: 600;
    font-size: 1.125rem;
}

.chart-change {
    font-weight: 600;
    font-size: 0.875rem;
}

.chart-change.positive {
    color: var(--color-success);
}

.chart-lines {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--spacing-lg);
    pointer-events: none;
}

.chart-line {
    height: 1px;
    background: var(--color-border);
    opacity: 0.3;
}

.chart-svg {
    width: 100%;
    height: 150px;
}

.chart-path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawChart 2s ease-out forwards;
}

.chart-area {
    opacity: 0;
    animation: fadeIn 1s ease-out 1s forwards;
}

@keyframes drawChart {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.hero-bg-gradient {
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: radial-gradient(ellipse at 70% 30%, rgba(212, 175, 55, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

/* ----- Features Section ----- */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-medium);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

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

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.15) 0%, rgba(212, 175, 55, 0.05) 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-desc {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

/* ----- CTA Section ----- */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-bg-light) 0%, var(--color-bg-dark) 100%);
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ----- Footer ----- */
.footer {
    background: var(--color-bg-dark);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-tagline {
    color: var(--color-text-muted);
    margin-top: var(--spacing-md);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

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

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.disclaimer {
    font-size: 0.75rem;
}

.footer-minimal {
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-minimal p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ----- Auth Pages ----- */
.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header-minimal {
    position: relative;
    background: var(--color-bg-dark);
}

.auth-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.auth-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1000px;
    width: 100%;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.auth-card {
    padding: var(--spacing-2xl);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.auth-subtitle {
    color: var(--color-text-secondary);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

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

.form-error {
    font-size: 0.75rem;
    color: var(--color-error);
    min-height: 1rem;
}

.password-input-wrapper {
    position: relative;
}

.password-input-wrapper .form-input {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.password-toggle:hover {
    color: var(--color-text-primary);
}

.password-toggle svg {
    width: 20px;
    height: 20px;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.checkbox-label input {
    display: none;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.checkbox-label input:checked + .checkbox-custom {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox-label input:checked + .checkbox-custom::after {
    content: '';
    width: 6px;
    height: 10px;
    border: solid var(--color-bg-dark);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    margin-bottom: 2px;
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--color-primary);
}

.forgot-link:hover {
    text-decoration: underline;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.auth-divider span {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.social-auth {
    display: flex;
    gap: var(--spacing-md);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.auth-footer p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.auth-link {
    color: var(--color-primary);
    font-weight: 500;
}

.auth-link:hover {
    text-decoration: underline;
}

.auth-side {
    background: linear-gradient(135deg, var(--color-bg-light) 0%, var(--color-bg-medium) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.auth-side::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, transparent 70%);
}

.auth-side-content {
    position: relative;
    z-index: 1;
}

.auth-side-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
}

.auth-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.auth-benefits li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-secondary);
}

.auth-benefits svg {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

/* ----- Toast Notifications ----- */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    opacity: 0;
    transition: all var(--transition-normal);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: var(--color-success);
}

.toast.error {
    border-color: var(--color-error);
}

/* ----- Responsive Design ----- */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .chart-mockup {
        max-width: 400px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .auth-container {
        grid-template-columns: 1fr;
        max-width: 480px;
    }

    .auth-side {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg-dark);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

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

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

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

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .section-title {
        font-size: 2rem;
    }

    .cta-title {
        font-size: 2rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

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

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .btn-lg {
        width: 100%;
    }

    .auth-card {
        padding: var(--spacing-lg);
    }
}