:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --accent: #ec4899;
    --bg: #0f172a;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --input-bg: rgba(15, 23, 42, 0.6);
    --input-border: rgba(255, 255, 255, 0.15);
    --error: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

.background-elements {
    position: absolute;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    overflow: hidden;
}

.blob {
    position: absolute;
    filter: blur(80px);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 10s infinite alternate ease-in-out;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 550px;
    padding: 2rem;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.glass-panel:hover {
    transform: translateY(-5px);
}

.header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

.header h1 span {
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.header p {
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-row .form-group {
    margin-bottom: 0;
}

.half {
    flex: 1;
}

.offset-half {
    margin-left: calc(50% + 0.5rem);
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text);
}

input, select {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text);
    padding: 0.875rem 1rem;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s ease;
    outline: none;
}

input:focus, select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.2rem;
    padding-right: 2.5rem;
}

select option {
    background-color: var(--bg);
    color: var(--text);
}

/* File Upload */
.file-drop-area {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 1.5rem;
    border: 2px dashed var(--input-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    transition: all 0.2s ease;
    cursor: pointer;
    text-align: center;
}

.file-drop-area:hover, .file-drop-area.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.file-msg {
    font-size: 0.875rem;
    color: var(--text-muted);
    pointer-events: none;
}
.file-msg span {
    color: var(--accent);
    font-weight: 600;
    display: block;
    margin-top: 5px;
}

.file-input {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    cursor: pointer;
    opacity: 0;
}

/* Button */
.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    margin-top: 1rem;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

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

.submit-btn .arrow {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.submit-btn:hover .arrow {
    transform: translateX(5px);
}

/* Invalid states */
input.invalid, select.invalid {
    border-color: var(--error);
}

@media (max-width: 600px) {
    .glass-panel {
        padding: 2rem;
    }
    .form-row {
        flex-direction: column;
        gap: 1.5rem;
    }
    .offset-half {
        margin-left: 0;
    }
}

/* SISTEMA DE NOTIFICACIONES EXIUSA */
.notification-container {
    position: fixed; top: 1rem; right: 1rem; z-index: 9999; display: flex; flex-direction: column; gap: 0.5rem; pointer-events: none;
}
.exiusa-toast {
    pointer-events: all; min-width: 300px; padding: 1rem; border-radius: 12px; background: var(--glass-bg); 
    backdrop-filter: blur(10px); border: 1px solid var(--glass-border); color: white; box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    display: flex; align-items: flex-start; gap: 10px; animation: slideIn 0.3s ease forwards;
}
.exiusa-toast.success { border-left: 5px solid #10b981; }
.exiusa-toast.error { border-left: 5px solid #ef4444; }
.exiusa-toast.info { border-left: 5px solid var(--primary); }
.exiusa-toast.fade-out { animation: fadeOut 0.5s ease forwards; }

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

/* MODAL EXIUSA */
.exiusa-modal-overlay {
    position: fixed; top:0; left:0; width:100%; height:100%; background: rgba(0,0,0,0.7); 
    display:flex; align-items:center; justify-content:center; z-index: 10000;
}
.exiusa-modal {
    background: var(--bg); border: 1px solid var(--glass-border); border-radius: 20px; padding: 2rem;
    max-width: 450px; width: 90%; text-align: center; box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    animation: zoomIn 0.3s ease;
}
.exiusa-modal h2 { margin-bottom: 1rem; background: linear-gradient(to right, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent;}
.exiusa-modal p { color: var(--text-muted); margin-bottom: 2rem; line-height: 1.5; }
.exiusa-modal-btn { 
    background: var(--primary); color: white; border: none; padding: 0.8rem 2rem; 
    border-radius: 10px; cursor: pointer; font-weight: 600; width: 100%; transition: 0.2s;
}
.exiusa-modal-btn:hover { background: var(--primary-hover); }

@keyframes zoomIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}