* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    /* ===== COLORES BASE ===== */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --text-primary: #182838;
    --text-secondary: #182838;
    --border-color: #e9ecef;
    --accent-color: #3498db;
    --accent-hover: #2980b9;
    
    /* ===== LOGIN - MINIMALISTA ===== */
    --login-bg-1: #0f1a2e;
    --login-bg-2: #1a2438;
    --login-accent: #3498db;
    --login-accent-2: #5b9bd5;
    --login-accent-soft: rgba(52, 152, 219, 0.10);
    --login-card-bg: rgba(255, 255, 255, 0.94);
    --login-card-border: rgba(255, 255, 255, 0.15);
    --login-text: #0d1b2a;
    --login-text-soft: rgba(13, 27, 42, 0.60);
    --login-input-bg: rgba(255, 255, 255, 0.06);
    --login-input-border: rgba(13, 27, 42, 0.08);
    --login-shadow: rgba(52, 152, 219, 0.10);
    --login-success: #27ae60;
    --login-error: #e74c3c;
}

body {
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
    background: 
        radial-gradient(circle at 30% 30%, rgba(81, 186, 255, 0.67) 0%, transparent 45%),
        radial-gradient(circle at 70% 70%, rgba(91, 154, 213, 0.802) 0%, transparent 40%),
        linear-gradient(135deg, var(--login-bg-1) 0%, var(--login-bg-2) 50%, #3a7abe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* Manchas de luz difuminadas flotando en el fondo oscuro:
   le dan el toque "moderno" mezclando claro y oscuro sin
   necesidad de tocar el HTML. */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.55;
    z-index: 0;
    pointer-events: none;
    animation: float 12s ease-in-out infinite;
}

body::before {
    width: 380px;
    height: 380px;
    top: -120px;
    left: -100px;
    background: var(--login-accent);
}

body::after {
    width: 420px;
    height: 420px;
    bottom: -140px;
    right: -120px;
    background: var(--login-accent-2);
    animation-delay: -6s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -20px) scale(1.08); }
}

img {
    width: 20%;
    height: 100%;
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 400px;
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-box {
    background: var(--login-card-bg);
    border: 1px solid var(--login-card-border);
    border-radius: 22px;
    padding: 40px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow:
        0 25px 70px rgba(0, 0, 0, 0.45),
        0 0 0 1px rgba(255, 255, 255, 0.06) inset;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 44px;
    background: linear-gradient(135deg, var(--login-accent), var(--login-accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 12px;
    display: inline-block;
}

.login-header h1 {
    font-size: 28px;
    color: var(--login-text);
    margin-bottom: 6px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.login-header h1 span {
    background: linear-gradient(135deg, #3498db 0%, #1d96e6 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
}

.login-header p {
    color: var(--login-text-soft);
    font-size: 14px;
}

.input-group {
    position: relative;
    margin-bottom: 18px;
}

.input-group i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--login-text-soft);
    transition: color 0.3s;
}

.input-group .toggle-password {
    left: auto;
    right: 15px;
    cursor: pointer;
}

.input-group .toggle-password:hover {
    color: var(--login-accent);
}

.input-group input {
    width: 100%;
    padding: 15px 45px;
    background: var(--login-input-bg);
    border: 1.5px solid var(--login-input-border);
    border-radius: 12px;
    color: var(--login-text);
    font-size: 14px;
    transition: all 0.3s;
}

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

.input-group input:focus {
    border-color: var(--login-accent);
    outline: none;
    background: rgba(120, 130, 245, 0.1);
    box-shadow: 0 0 0 4px rgba(124, 140, 248, 0.15);
}

.input-group input:focus ~ i:first-child {
    color: var(--login-accent);
}

#loginBtn {
    width: 100%;
    padding: 15px;
    margin-top: 4px;
    background: linear-gradient(135deg, #3498db 0%, #1d96e6 100%);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.2px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 8px 20px rgba(124, 140, 248, 0.35);
    transition: all 0.3s;
}

#loginBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(124, 140, 248, 0.45);
}

#loginBtn:active {
    transform: translateY(0);
}

#loginBtn i {
    transition: transform 0.3s;
}

#loginBtn:hover i {
    transform: translateX(5px);
}

#loginBtn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.login-footer {
    margin-top: 22px;
    text-align: center;
    color: var(--login-text-soft);
    font-size: 12px;
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    background: rgba(30, 33, 66, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 10px;
    color: #f4f5ff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    display: none;
    align-items: center;
    gap: 10px;
    z-index: 9999;
    animation: slideIn 0.3s ease;
}

.toast.show {
    display: flex;
}

.toast.success {
    border: 1px solid rgba(39, 174, 96, 0.6);
}

.toast.error {
    border: 1px solid rgba(230, 24, 1, 0.6);
}

.toast i {
    font-size: 20px;
}

.toast.success i {
    color: #2ecc71;
}

.toast.error i {
    color: #ff5c3d;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 480px) {
    .login-box {
        padding: 30px 24px;
        border-radius: 18px;
    }

    .login-header i {
        font-size: 38px;
    }

    .login-header h1 {
        font-size: 24px;
    }

    body::before,
    body::after {
        width: 260px;
        height: 260px;
    }
}