/* ============================================
   Design System — Reenvio de Email SysOnPDV-Pro
   ============================================ */

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

/* CSS Variables */
:root {
    --primary-50:  #e8f4fd;
    --primary-100: #b9def8;
    --primary-200: #8ac8f3;
    --primary-300: #5bb2ee;
    --primary-400: #2c9ce9;
    --primary-500: #006fba;
    --primary-600: #005a96;
    --primary-700: #004572;
    --primary-800: #00304e;
    --primary-900: #001b2a;

    --accent-400: #f59e0b;
    --accent-500: #d97706;

    --success-400: #34d399;
    --success-500: #10b981;
    --success-600: #059669;

    --error-400: #f87171;
    --error-500: #ef4444;
    --error-600: #dc2626;

    --neutral-50:  #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;

    --bg-gradient-start: #0f172a;
    --bg-gradient-mid:   #1e3a5f;
    --bg-gradient-end:   #0c2d48;

    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
*, *::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-family);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%);
    color: #ffffff;
    overflow-x: hidden;
    padding: 20px;
}

/* Animated background particles */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 20%, rgba(0, 111, 186, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 111, 186, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(52, 107, 149, 0.08) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

/* ============ MAIN CONTAINER ============ */
.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 520px;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============ LOGO ============ */
.logo-area {
    text-align: center;
    margin-bottom: 32px;
}

.logo-area img {
    max-width: 200px;
    height: auto;
    filter: drop-shadow(0 4px 12px rgba(0, 111, 186, 0.3));
    transition: var(--transition);
}

.logo-area img:hover {
    filter: drop-shadow(0 6px 20px rgba(0, 111, 186, 0.5));
    transform: scale(1.03);
}

.logo-area h1 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--primary-200);
    margin-top: 12px;
    letter-spacing: 0.5px;
}

/* ============ CARD (Glass) ============ */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    padding: 36px 32px;
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-200) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-subtitle {
    text-align: center;
    color: var(--neutral-400);
    font-size: 0.9rem;
    margin-bottom: 28px;
    line-height: 1.5;
}

/* ============ FORM ============ */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--neutral-300);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 16px;
    color: var(--neutral-400);
    font-size: 1.1rem;
    pointer-events: none;
    transition: var(--transition);
}

.form-input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    background: rgba(255, 255, 255, 0.05);
    border: 1.5px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: #ffffff;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
}

.form-input::placeholder {
    color: var(--neutral-500);
}

.form-input:focus {
    border-color: var(--primary-400);
    background: rgba(0, 111, 186, 0.08);
    box-shadow: 0 0 0 3px rgba(0, 111, 186, 0.15);
}

.form-input:focus ~ .input-icon,
.form-input:focus + .input-icon {
    color: var(--primary-400);
}

/* ============ INPUT HINT ============ */
.input-hint {
    display: block;
    font-size: 0.78rem;
    margin-top: 6px;
    padding-left: 4px;
    color: var(--neutral-500);
    transition: var(--transition);
    min-height: 18px;
}

.hint-email {
    color: var(--primary-300);
}

.hint-chave {
    color: var(--accent-400);
}

/* ============ LABEL OPTIONAL BADGE ============ */
.label-optional {
    font-weight: 400;
    font-size: 0.75rem;
    color: var(--neutral-500);
    text-transform: none;
    letter-spacing: 0;
}

.card-subtitle strong {
    color: var(--neutral-200);
}

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.3px;
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

.btn:hover::after {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 111, 186, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-400) 0%, var(--primary-500) 100%);
    box-shadow: 0 6px 24px rgba(0, 111, 186, 0.4);
    transform: translateY(-1px);
}

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

.btn-success {
    background: linear-gradient(135deg, var(--success-500) 0%, var(--success-600) 100%);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success-400) 0%, var(--success-500) 100%);
    box-shadow: 0 6px 24px rgba(16, 185, 129, 0.4);
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn:disabled::after {
    display: none;
}

/* ============ RESULT CARD ============ */
.result-area {
    margin-top: 24px;
    display: none;
}

.result-area.visible {
    display: block;
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    background: rgba(0, 111, 186, 0.1);
    border: 1px solid rgba(0, 111, 186, 0.2);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.result-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    color: #ffffff;
    flex-shrink: 0;
}

.result-name {
    font-size: 1.15rem;
    font-weight: 600;
    color: #ffffff;
}

.result-email-text {
    font-size: 0.85rem;
    color: var(--neutral-400);
    margin-top: 2px;
}

.result-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}

.result-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--neutral-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 60px;
}

.result-value {
    font-size: 0.95rem;
    color: var(--primary-100);
    font-weight: 500;
}

.btn-reenviar {
    margin-top: 20px;
}

/* ============ MESSAGES (success/error) ============ */
.message {
    margin-top: 20px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    display: none;
    align-items: center;
    gap: 10px;
    animation: fadeInUp 0.3s ease-out;
}

.message.visible {
    display: flex;
}

.message-success {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: var(--success-400);
}

.message-error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: var(--error-400);
}

.message-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

/* ============ LOADING SPINNER ============ */
.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

/* ============ FOOTER ============ */
.footer {
    text-align: center;
    margin-top: 24px;
    color: var(--neutral-500);
    font-size: 0.8rem;
}

.footer a {
    color: var(--primary-300);
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    color: var(--primary-200);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 600px) {
    body {
        padding: 16px;
    }

    .card {
        padding: 28px 20px;
        border-radius: var(--radius-lg);
    }

    .card-title {
        font-size: 1.3rem;
    }

    .logo-area img {
        max-width: 160px;
    }

    .result-header {
        flex-direction: column;
        text-align: center;
    }
}

/* ============ PULSE ANIMATION ============ */
@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 111, 186, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(0, 111, 186, 0);
    }
}

.btn-primary:focus {
    animation: pulse 1.5s ease-in-out infinite;
}

/* ============ SHIMMER (loading placeholder) ============ */
.shimmer {
    background: linear-gradient(90deg,
        rgba(255,255,255,0.04) 25%,
        rgba(255,255,255,0.08) 50%,
        rgba(255,255,255,0.04) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}