/* ===================================
   Re:Bond Landing Page Styles
   Design System: Warm Iris Theme
   =================================== */

/* ===================================
   CSS Custom Properties (Design Tokens)
   =================================== */
:root {
    /* Colors from Re:Bond design system */
    --color-primary: #6750A4;           /* Warm Iris */
    --color-primary-hover: #7B61C4;     /* Lighter primary */
    --color-accent: #3BB8AC;            /* Soft Teal */
    --color-bg-dark: #17141F;           /* Deep background */
    --color-bg-medium: #332045;         /* Medium purple background */
    --color-surface: #482F5D;           /* Card/input surface */
    --color-error: #E85C5C;             /* Sunset Coral */

    --color-text-primary: #FFFFFF;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-disabled: rgba(255, 255, 255, 0.5);

    /* Typography */
    --font-headline: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing (8px grid) */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;

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

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

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(180deg, var(--color-bg-medium) 0%, var(--color-bg-dark) 100%);
    background-attachment: fixed;
    color: var(--color-text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-lg);
    text-align: center;
}

.hero-content {
    max-width: 480px;
    width: 100%;
}

/* Logo */
.logo {
    width: 120px;
    height: 120px;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.6s ease-out;
    filter: drop-shadow(0 4px 12px rgba(103, 80, 164, 0.3));
}

/* Brand Name */
.brand-name {
    font-family: var(--font-headline);
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
    animation: fadeInUp 0.6s ease-out 0.1s both;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Headline */
.headline {
    font-family: var(--font-headline);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.6s ease-out 0.15s both;
}

/* Tagline */
.tagline {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

/* ===================================
   Subscribe Form
   =================================== */
.subscribe-form {
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

@media (min-width: 480px) {
    .input-group {
        flex-direction: row;
    }
}

.input-group input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-group input::placeholder {
    color: var(--color-text-disabled);
}

.input-group input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(103, 80, 164, 0.3);
}

.input-group input:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}

.btn-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    background: var(--color-primary);
    color: var(--color-text-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
    min-width: 130px;
}

.btn-submit:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
}

.btn-submit:active {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Loading Spinner */
.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Form Messages */
.form-message {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
}

.form-message.success {
    background: rgba(59, 184, 172, 0.15);
    color: var(--color-accent);
    border: 1px solid rgba(59, 184, 172, 0.3);
}

.form-message.error {
    background: rgba(232, 92, 92, 0.15);
    color: var(--color-error);
    border: 1px solid rgba(232, 92, 92, 0.3);
}

/* Privacy Note */
.privacy-note {
    margin-top: var(--space-md);
    font-size: 0.8125rem;
    color: var(--color-text-disabled);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

/* ===================================
   Footer
   =================================== */
.footer {
    margin-top: auto;
    padding-top: var(--space-xxl);
    text-align: center;
}

.footer-copyright {
    font-size: 0.8125rem;
    color: var(--color-text-disabled);
    margin-bottom: var(--space-xs);
}

.footer-contact {
    font-size: 0.8125rem;
    margin-bottom: var(--space-xs);
}

.footer-contact a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-contact a:hover {
    color: var(--color-accent);
}

.footer-address {
    font-size: 0.75rem;
    color: var(--color-text-disabled);
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 480px) {
    .brand-name {
        font-size: 2rem;
    }

    .headline {
        font-size: 1rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .logo {
        width: 100px;
        height: 100px;
    }

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

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

    .spinner {
        animation: none;
    }
}