@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #06b6d4;
    --bg-dark: #0f172a;
    --bg-card-dark: rgba(30, 41, 59, 0.7);
    --text-white: #ffffff;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
    --error: #ef4444;
    --success: #22c55e;
    
    /* Layout Variables */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

/* Glassmorphic Card Container */
.glass-card {
    background: var(--bg-card-dark);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.4);
}

/* Typography & Headings */
h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
    background: linear-gradient(135deg, #ffffff 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.form-input {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.875rem 1rem;
    color: var(--text-white);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition);
    width: 100%;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    background: rgba(15, 23, 42, 0.8);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    color: var(--text-white);
    border: none;
    border-radius: 10px;
    padding: 0.75rem 1.4rem;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.35);
    outline: none;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(6, 182, 212, 0.5);
}

.btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 2px 10px rgba(6, 182, 212, 0.3);
}

/* Alerts & Validation Errors */
.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.4;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.alert-error ul {
    list-style: none;
    padding-left: 0;
}