:root {
    --green-dark: #1a5c2a;
    --green-field: #2d8a4e;
    --green-light: #3cb371;
    --gold: #d4a843;
    --gold-light: #f0d68a;
    --white: #ffffff;
    --dark: #1a1a2e;
    --gray: #6c757d;
    --gray-light: #f0f2f5;
    --red: #dc3545;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--green-dark) 0%, var(--dark) 100%);
    min-height: 100vh;
    color: var(--white);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    text-align: center;
    padding: 40px 20px 30px;
}

.header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
    background: linear-gradient(to right, var(--gold-light), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header .subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.7);
    font-weight: 300;
}

.header .trophy {
    font-size: 3rem;
    display: block;
    margin-bottom: 10px;
}

/* Steps indicator */
.steps {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 30px;
    background: rgba(255,255,255,0.1);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.step.active {
    background: var(--gold);
    color: var(--dark);
    font-weight: 600;
}

.step.done {
    background: var(--green-light);
    color: var(--white);
}

.step-number {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.step.active .step-number {
    background: var(--dark);
    color: var(--gold);
}

.step.done .step-number {
    background: rgba(0,0,0,0.2);
}

/* Selection panel */
.selection-panel {
    background: rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
}

.selection-panel h3 {
    text-align: center;
    margin-bottom: 15px;
    color: var(--gold-light);
    font-size: 1.1rem;
}

.selected-teams {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.selected-slot {
    width: 150px;
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    border: 2px dashed rgba(255,255,255,0.3);
    transition: all 0.3s ease;
    position: relative;
}

.selected-slot.filled {
    border-style: solid;
    border-color: var(--gold);
    background: rgba(212, 168, 67, 0.15);
}

.selected-slot .rank {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gold);
    margin-bottom: 5px;
    font-weight: 700;
}

.selected-slot .team-flag {
    font-size: 2rem;
    display: block;
    margin-bottom: 5px;
}

.selected-slot .team-name {
    font-size: 0.85rem;
    font-weight: 600;
}

.selected-slot .remove-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--red);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 0.75rem;
    display: none;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.selected-slot.filled .remove-btn {
    display: flex;
}

/* Groups */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.group-card {
    background: rgba(255,255,255,0.06);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.08);
    transition: transform 0.2s ease;
}

.group-card:hover {
    transform: translateY(-2px);
}

.group-header {
    background: rgba(255,255,255,0.1);
    padding: 8px 15px;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gold-light);
}

.group-teams {
    padding: 5px;
}

.team-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 12px;
    border: none;
    background: transparent;
    color: var(--white);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

.team-btn:hover {
    background: rgba(255,255,255,0.1);
}

.team-btn.selected {
    background: var(--gold);
    color: var(--dark);
    font-weight: 600;
}

.team-btn .flag {
    font-size: 1.4rem;
}

.team-btn .badge {
    margin-left: auto;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--dark);
    color: var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 800;
}

/* Validate button */
.btn-validate {
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 0 auto 30px;
    padding: 16px 30px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--dark);
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.5;
    pointer-events: none;
}

.btn-validate.enabled {
    opacity: 1;
    pointer-events: all;
}

.btn-validate.enabled:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 168, 67, 0.4);
}

/* Form step 2 */
.form-card {
    background: rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 30px;
    max-width: 500px;
    margin: 0 auto 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
}

.form-card h3 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--gold-light);
    font-size: 1.2rem;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.8);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.08);
    color: var(--white);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input::placeholder {
    color: rgba(255,255,255,0.4);
}

.form-group input:focus {
    outline: none;
    border-color: var(--gold);
    background: rgba(255,255,255,0.12);
}

.btn-submit {
    display: block;
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--green-field), var(--green-light));
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1.05rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(45, 138, 78, 0.4);
}

/* Checkbox règlement */
.checkbox-group {
    margin-bottom: 20px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.8);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--gold);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-label a {
    color: var(--gold-light);
    text-decoration: underline;
}

/* Confirmation */
.confirmation {
    text-align: center;
    padding: 40px 20px;
}

.confirmation .check-icon {
    font-size: 4rem;
    margin-bottom: 15px;
    display: block;
}

.confirmation h2 {
    color: var(--gold-light);
    margin-bottom: 10px;
    font-size: 1.6rem;
}

.confirmation p {
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
    margin-bottom: 20px;
}

.recap {
    display: inline-flex;
    gap: 20px;
    background: rgba(255,255,255,0.08);
    padding: 20px 30px;
    border-radius: 12px;
    margin-top: 10px;
}

.recap-item {
    text-align: center;
}

.recap-item .rank-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gold);
    font-weight: 700;
}

.recap-item .flag {
    font-size: 2rem;
    display: block;
    margin: 5px 0;
}

.recap-item .name {
    font-size: 0.8rem;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 500;
}

.alert-error {
    background: rgba(220, 53, 69, 0.2);
    border: 1px solid rgba(220, 53, 69, 0.4);
    color: #ff8a95;
}

.alert-success {
    background: rgba(60, 179, 113, 0.2);
    border: 1px solid rgba(60, 179, 113, 0.4);
    color: #7ddfab;
}

/* Hidden */
.hidden {
    display: none !important;
}

/* Footer */
.footer {
    text-align: center;
    padding: 30px 20px;
    color: rgba(255,255,255,0.3);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.5rem;
    }

    .groups-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }

    .selected-slot {
        width: 120px;
        padding: 10px;
    }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }

    .recap {
        flex-direction: column;
        gap: 10px;
    }
}