@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Poppins:wght@600;700;800&display=swap');

:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #3730a3;
    --secondary: #7c3aed;
    --gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-glow: linear-gradient(135deg, rgba(79, 70, 229, 0.4) 0%, rgba(124, 58, 237, 0.4) 100%);
    --dark: #0f172a;
    --gray: #64748b;
    --light-gray: #e2e8f0;
    --bg-light: #f4f6fb;
    --white: #ffffff;
    --radius-lg: 24px;
    --shadow-card: 0 20px 50px rgba(79, 70, 229, 0.12), 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 24px 60px rgba(79, 70, 229, 0.28);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-light);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    color: var(--dark);
    position: relative;
    overflow-x: hidden;
}

/* Background Animated Blobs */
.blob-container {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    width: 550px;
    height: 550px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.8;
}

.b-1 {
    top: -120px;
    right: -120px;
    background: rgba(79, 70, 229, 0.14);
}

.b-2 {
    bottom: -120px;
    left: -120px;
    background: rgba(124, 58, 237, 0.12);
}

/* Card */
.auth-wrapper {
    width: 100%;
    max-width: 480px;
    position: relative;
    z-index: 10;
}

.auth-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 44px 38px;
    border: 1px solid rgba(226, 232, 240, 0.9);
    position: relative;
    animation: cardFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Logo Header */
.auth-header {
    text-align: center;
    margin-bottom: 24px;
}

.logo-circle {
    width: 72px;
    height: 72px;
    background: var(--gradient);
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: white;
    font-size: 2rem;
    box-shadow: 0 10px 24px rgba(79, 70, 229, 0.35);
    transform: rotate(-6deg);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo-circle:hover {
    transform: rotate(0deg) scale(1.06);
}

.auth-header h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.85rem;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: -0.5px;
    line-height: 1.1;
    margin-bottom: 4px;
}

.auth-header h1 span {
    color: var(--primary-light);
}

.auth-header p {
    color: var(--gray);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Title & Subtitle */
.card-title-block {
    text-align: center;
    margin-bottom: 24px;
}

.card-title-block h2 {
    font-size: 1.45rem;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: -0.3px;
    margin-bottom: 6px;
}

.card-title-block .subtitle {
    color: var(--gray);
    font-size: 0.88rem;
    line-height: 1.45;
}

/* Floating Input Group */
.form-floating-group {
    position: relative;
    margin-bottom: 20px;
}

.form-floating-group input {
    width: 100%;
    padding: 20px 16px 8px;
    font-size: 0.98rem;
    font-weight: 600;
    border: 1.5px solid var(--light-gray);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.85);
    color: #0f172a;
    transition: var(--transition);
}

.form-floating-group input:focus {
    border-color: var(--primary-light);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
    outline: none;
}

.form-floating-group label {
    position: absolute;
    left: 16px;
    top: 15px;
    color: var(--gray);
    font-size: 0.92rem;
    font-weight: 500;
    pointer-events: none;
    transition: var(--transition);
    transform-origin: left;
}

.form-floating-group input:focus + label,
.form-floating-group input:not(:placeholder-shown) + label {
    top: 6px;
    font-size: 0.72rem;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Selector Group */
.kuri-selector-box {
    background: #f8fafc;
    border: 1.5px solid #cbd5e1;
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 22px;
    animation: fadeInDown 0.3s ease;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.kuri-selector-label {
    display: block;
    font-size: 11px;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 8px;
}

.kuri-selector-select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1.5px solid #cbd5e1;
    background: #ffffff;
    color: #0f172a;
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
}

.kuri-selector-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* Button */
.btn-gradient {
    width: 100%;
    height: 52px;
    background: var(--gradient);
    color: white;
    font-size: 0.98rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
    transition: var(--transition);
    text-decoration: none;
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(79, 70, 229, 0.45);
}

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

/* Extra links */
.extra-links {
    margin-top: 24px;
    text-align: center;
    font-size: 0.88rem;
    font-weight: 600;
}

.back-link {
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--primary-dark);
    transform: translateX(-3px);
}

.signup-text {
    margin-top: 12px;
    color: var(--gray);
    font-size: 0.84rem;
}

.signup-link {
    color: var(--secondary);
    font-weight: 700;
    text-decoration: none;
}

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

/* Messages */
.messages {
    margin-bottom: 20px;
}

.alert {
    padding: 12px 16px;
    border-radius: 14px;
    font-size: 0.86rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    border-left: 4px solid;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.alert-success { background: #f0fdf4; color: #166534; border-left-color: #22c55e; }
.alert-error, .alert-danger { background: #fef2f2; color: #991b1b; border-left-color: #ef4444; }
.alert-info { background: #eef2ff; color: #3730a3; border-left-color: #6366f1; }
.alert-warning { background: #fffbeb; color: #92400e; border-left-color: #f59e0b; }

/* Responsive */
@media (max-width: 480px) {
    .auth-card {
        padding: 34px 24px;
        border-radius: 20px;
    }
    .auth-header h1 {
        font-size: 1.6rem;
    }
    .logo-circle {
        width: 62px;
        height: 62px;
        font-size: 1.7rem;
    }
}