:root {
    --primary-color: #007fff; /* Bleu Azure */
    --primary-hover: #0066cc;
    --secondary-color: #ff8c00; /* Orange */
    --bg-color: #f0f2f5;
    --card-bg: #ffffff;
    --text-main: #1c1e21;
    --text-muted: #606770;
    --border-color: #e4e6eb;
    --success-color: #31a24c;
    --error-color: #f02849;
    --radius: 16px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    background-color: var(--card-bg);
    box-shadow: 0 1px 5px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

header h1 {
    font-size: 1.6rem;
    color: var(--primary-color);
    font-weight: 800;
    letter-spacing: -0.5px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
    border-radius: 8px;
}

.btn-full {
    width: 100%;
    display: block;
}

/* Forms */
h2 {
    margin-bottom: 10px;
    font-size: 1.5rem;
}

h3 {
    margin-top: 25px;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

input[type="text"],
input[type="password"],
textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid #ccd0d5;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--card-bg);
    transition: border-color 0.2s;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea {
    resize: vertical;
}

/* Tabs */
.tabs {
    display: flex;
    background: #e4e6eb;
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 25px;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    border: none;
    background: transparent;
    border-radius: 10px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
}

.tab-btn.active {
    background: var(--card-bg);
    color: var(--primary-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Interests Grid */
.interests-container {
    margin-top: 15px;
}

.interest-group {
    margin-bottom: 20px;
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.interest-group h4 {
    margin-bottom: 15px;
    font-size: 1.05rem;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    font-size: 0.95rem;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 10px;
    width: 22px;
    height: 22px;
    accent-color: var(--primary-color);
}

/* Matches */
.dashboard-header {
    margin-bottom: 30px;
    text-align: center;
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.section-title {
    margin-bottom: 15px;
    font-size: 1.3rem;
    padding-left: 5px;
}

.match-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.match-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.match-info h4 {
    font-size: 1.2rem;
    margin: 0;
}

.match-username {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: block;
    margin-top: 2px;
}

.match-score {
    background-color: #fff4e6;
    color: var(--secondary-color);
    padding: 10px 15px;
    border-radius: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    min-width: 70px;
}

/* Messagerie */
.chat-container {
    background: var(--card-bg);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    height: 400px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.message {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 18px;
    font-size: 0.95rem;
}

.message-sent {
    align-self: flex-end;
    background-color: var(--primary-color);
    color: white;
    border-bottom-right-radius: 4px;
}

.message-received {
    align-self: flex-start;
    background-color: #e4e6eb;
    color: var(--text-main);
    border-bottom-left-radius: 4px;
}

.chat-input-area {
    padding: 15px;
    border-top: 1px solid var(--border-color);
}

.chat-form {
    display: flex;
    gap: 10px;
}

.chat-form input {
    flex: 1;
    border-radius: 20px;
}

.btn-orange {
    background-color: var(--secondary-color);
    color: white;
}

.btn-orange:hover {
    background-color: #e67e00;
}

.btn-error {
    background-color: var(--error-color);
    color: white;
}

.btn-error:hover {
    background-color: #d01d3b;
}

.score-value {
    font-weight: 800;
    font-size: 1.2rem;
    line-height: 1;
}

.score-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
    font-weight: 600;
}

.match-description {
    color: #444;
    font-size: 1rem;
    margin-bottom: 15px;
    background: var(--bg-color);
    padding: 15px;
    border-radius: 12px;
}

.match-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
}

.match-footer span {
    background: #e4e6eb;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    color: var(--text-main);
    font-weight: 500;
}

/* Utilities */
.text-muted { color: var(--text-muted); }
.text-small { font-size: 0.9rem; }
.alert { padding: 15px; border-radius: 12px; margin-bottom: 25px; font-size: 0.95rem; }
.alert-error { background-color: #ffebe8; color: var(--error-color); border: 1px solid #ffd0cc; }
.alert-success { background-color: #e6f4ea; color: var(--success-color); border: 1px solid #ceead6; }
.empty-state { text-align: center; padding: 50px 20px; color: var(--text-muted); background: var(--card-bg); border-radius: var(--radius); }